[[quoteright:350:[[Webcomic/LeagueOfSuperRedundantHeroes http://static.tvtropes.org/pmwiki/pub/images/leagueofsuperredundantheroes1.jpg]]]]

->''"Never let a beautiful woman pick your path when there is a man in her line of sight."''
-->-- An old proverb among women according to the ''Literature/SwordOfTruth'' books

This is when somebody tries to ruin someone else's romantic relationship or marriage.

There are various reasons someone might do this. One of the most common is that the saboteur is [[LoveTriangle in love with one of the people in the relationship]], and is [[LoveMakesYouEvil willing to stoop pretty low]] to "correct" this situation. (In extreme cases, they may even try to MurderTheHypotenuse.) A non-romantic version of this arises from FriendVersusLover situations, where a character is rivaled over by his/her best friend and the LoveInterest. Alternatively, it could be that they just want {{Revenge}} for something, or that they want to free up one of the parties for a bit of [[GoldDigger gold digging]], or that they're simply [[GreenEyedMonster bitter that someone else is so happy]] and [[LoveHungry they're not]]. Sometimes, they may even be acting from a genuine, well-intentioned, and possibly even accurate belief that their friend [[WhatDoesSheSeeInHim has made a poor choice]] or [[TheMatchmaker should have chosen someone else]].

The range of techniques available to a relationship saboteur is similarly varied. Lying is popular - you just need to make one half of the relationship look bad, such as by fabricating [[MistakenForCheating evidence of an affair]] or trying to make them flunk a FidelityTest. It could be as simple as giving deliberately lousy relationship advice. If the relationship is fairly new, being a deliberate MomentKiller might be an option, and might prompt the saboteur to [[DatePeepers follow the targets on dates]].

See also BreakUpDemand for a different method of achieving the same goal. If a character simply makes their dislike of the pairing known, it's probably just a ShippingTorpedo. A specialised variant is PleaseDumpMe, where people try to surreptitiously sabotage their ''own'' relationship (because they don't want to end it properly for some reason). Contrast ShipperOnDeck, where someone is trying to create a relationship rather than destroy one.



* In one commercial, one teenage boy forces his younger brother upstairs so he can spend time with his girlfriend. The younger brother then uses the TV to show the girlfriend a slideshow of pictures that indicate he's cheating on her.

* In the backstory of ''Manga/SaiunkokuMonogatari'', Kou Reishin and his friend Houju were both interested in the same woman. Reishin sabotaged Houju's relationship with her by forging a letter from her to Houju saying she couldn't bear to be with a man [[SoBeautifulItsACurse so much more beautiful than herself]]. As a result, Houju started wearing masks all the time and calling himself "Kijin," meaning "weirdo," and Reishin married the girl.
* Skuld in ''Manga/AhMyGoddess'', who takes her [[BigBrotherWorship Big Sister Worship]] towards Belldandy a bit too far and won't stand for anyone, particularly lowly mortal Keiichi, getting too close to her. She frequently sets up booby traps (mostly involving StuffBlowingUp) to prevent their relationship from progressing. [[ShipTease It is hinted a few times]], though, that she's acting out not because she's jealous of Keiichi for taking Belldandy's attention, but that she's jealous of Belldandy for getting Keiichi's love.
* Makie from ''Manga/FutariEcchi'' does that at every opportunity to the main character couple. I.e., she leaves false lipstick marks on Makoto's shirt or calls him in the middle of a date with his wife Yura.
* Happens more than once in ''Manga/MarmaladeBoy'', with the most notorious perpetrators being Kei Tsuchiya (who [[spoiler: grabs Miki's medallion/bracelet and gives it to Yuu saying she threw it away; Yuu doesn't buy it, but he and Miki still almost break up due to stress.]]) and Ginny Golding (who [[spoiler: lies to Miki by telling her she was Yuu's "other woman" as a prank; this causes the already distraught Miki to break off her and Yuu's LongDistanceRelationship.]])
* Manga/{{Naruto}}, after finding out that Sakura doesn't care for him at all while he's disguised as Sasuke, is forced to retreat to the restroom because he drank spoiled milk in the morning. While on the toilet, he plans on returning to Sakura, still disguised as Sasuke and acting like a jerk in order to make her hate him. By the time he gets out, though, Sasuke has already escaped his bonds, and coldly told Sakura that he finds her annoying.
* ''Manga/RanmaOneHalf'': Ryoga, Shampoo, Ukyo, Kodachi, and other characters all try to sabotage Ranma and Akane's engagement at some point or other.
** Ranma and Akane team up in the manga to thwart the possibility of Hinako and Soun marrying.
* Chihaya of ''Manga/ServantXService'' is dead set on preventing Yutaka and Lucy getting together. Some of Lucy's hesitation on dating Yutaka originates from Chihaya making him sound more devious than he really is. This is mostly because she wants to cosplay Lucy and erroneously believes that so does he.
* In the anime of ''Anime/SailorMoon'', Lita is jealous that her crush, Andy, has a girlfriend. Upon finding out that the girlfriend is tempted to accept a job abroad which would separate her from Andy for a long period of time, Lita nicely sits down and has a talk with her, trying to convince her to take the job. She ends the talk with the suggestion that Andy and the girlfriend could very well pick up where they left off, before lampshading to herself how terrible she is at sabotaging relationships.

[[folder:Comic Books]]
* At the end of Creator/FrankMiller's ''Comicbook/{{Daredevil}}'', a grieving Matt Murdock had pressured his rather fragile girlfriend Heather Glenn into agreeing to marry him, which was literally driving her to drink. Believing that no good could come of this for anyone, Matt's partner Foggy and his ex the Black Widow created forged notes telling each partner that the other one wanted to break it off and never see them again. The immediate consequences were never shown, but a few years later Heather committed suicide.
* Lana Lang attempted this occasionally when her jealousy of [[{{Franchise/Superman}} Clark]] and Lois' marriage got the best of her. In one instance she tried to convince Clark that Lois was a bad wife and left her panties in the Kents' bed in a fit of jealous anger when Clark refused to be swayed by her arguments.
%%* One of the principal story themes in Franchise/ArchieComics.
* ''ComicBook/MortadeloYFilemon'': Accidental. In "El Brujo" (The Warlock), there is a middle- aged couple sitting on a fallen trunk in a romantic countryside setting, lovingly holding hands. "Abelarda", says he, "swear that there is no other man between you and me". "I... I swear, Eloíso", says she. Mortadelo suddenly teleports right between the two, thanks to a spell he has unknowingly activated. Eloíso breaks the relationship and leaves angrily, and Mortadelo is beaten off-screen by Abelarda.

[[folder:Fan Fiction]]
* In one of the stories of the ''FanFic/FacingTheFutureSeries'', [[WesternAnimation/DannyPhantom Danny's enemies]] unsuccessfully tried to this to Danny and Sam.
** In another story, Nocturne nearly pulled this trope off by sealing away their memories of each other, only to be thwarted by ThePowerOfLove.
* ''FanFic/PonyvilleGoesToTheDragons'': Applejack warns Rarity ''not'' to attempt this Trope when she learns Spike has started a relationship with [[Franchise/SpyroTheDragon Ember]], telling her about how she knew about Spike's affection for her yet did nothing about it when she had the chance, and stating that she'll ''prefer'' being sent to the moon compared to what AJ will do to her if she tries anything. [[spoiler: Still doesn't stop her from giving an anonymous 'tip' about there being vicious dragons in Ponyville to the Canterlot Royal Guards...]]

* In ''Film/MyBestFriendsWedding'', Julianne tries to derail the upcoming marriage of a guy who had promised to marry her if they were both still single at a certain age. [[spoiler: It fails, epically.]]
** In its GenderFlip, ''Made Of Honor'', the man has the same goal, though the stunts he pulls aren't nearly as nasty (he mostly just goes overboard in showing her that he's matured and ready for commitment, the main reasons why his female friend never considered him boyfriend material before).
* Pretty much the entire plot of the film ''Film/SavingSilverman''.
* Both Balraj's sister Kiran and Darcy's mother try very hard to keep Jaya and Lalita very far away from Balraj and Darcy in ''Film/BrideAndPrejudice''.
* Film/SherlockHolmes went out of his way to try to get Dr. Watson to not get engaged to Mary since he wanted to keep him for himself. He insulted Mary with a deduction and he paid a fortune teller to plant seeds of doubt into Watson's head. He eventually did give his consent, partly because he was impressed with Mary's own observation skills ([[spoiler:she easily sees through his disguise as a doctor]]).
* In ''Film/PlanB'', Bruno's "Plan B" to make his ex-girlfriend Laura and her new boyfriend Pablo break up is to seduce Pablo and drive him away from her. [[spoiler:It works, but by then it's not ''Laura'' he wants to be with.]]
* In ''{{Disney/Mulan}} 2'', Mushu tries to break up Mulan and Shang to save his job. When Mulan finds out, she gets ''pissed.'' Fortunately, Mushu makes amends.
* This is Peggy's plan in ''Film/TheBestYearsOfOurLives'': she declares that she's going to break up the unhappy marriage between Fred and Marie. [[spoiler:It's not really her fault the marriage falls apart, but she does get Fred in the end.]]
* In ''Film/WickerPark'', Alex does this to Matthew and Lisa's relationship as we learn via flashbacks. She never delivered that one letter that would have explained Lisa's sudden departure to Matthew.
* In ''Film/ShortCuts'', Stormy Weathers fires torpedoes at his soon-to-be ex-wife Betty's relationship with Gene Shepard as part of his revenge against her. He first leaves his son Chad with her instead of taking him for the evening per their custody agreement, so that she is forced to take Chad on her date with Gene. Then, when Gene calls her at home after his suspicions that she is having yet ''another'' relationship are roused by her [[BadLiar flimsy cover story]] regarding why she can't spend the weekend with him, Stormy answers the phone and pretends to yell at Betty to put some panties on before hanging up.
* In the 2004 {{remake}} of ''Film/TheStepfordWives'', one of Johanna's new shows was a RealityShow based around this trope called "I Can Do Better". However, when the couple from the prototype episode separated, the divorced husband went on a RoaringRampageOfRevenge that resulted in a string of lawsuits that resulted in Johanna getting fired, thus leading to the plot.
* In ''Film/SonInLaw'', Travis drugs Crawl and Tracy and leaves them to be discovered naked together in the barn in order to sabotage Crawl's engagement to Becca.
* It might be unintentional in the movie "Coco", when Ernesto de la Cruz killed his best friend Hector Rivera who had a wife and a daughter, thus Ernesto never told anyone about Hector's death, his wife Imelda assumed he abandoned her and held a grudge against him for the rest of her life and her death. Upon knowing the truth of Hector's death, she still held the grudge but accepted that it was Ernesto who separated them and helped to save Hector and have a little revenge on Ernesto. This is unintentional not because Ernesto did or did not wanted to separate them but because he cared more about fame, fortune and being a national hit than the consequences of his actions

* Will from ''Literature/SuperPowereds'' provides a fairly benevolent example. When he finds out that his sister Jill has an abusive boyfriend, he threatens to kill him and then orders him to leave without explanation and never interact with her again.
* ''Literature/PrideAndPrejudice'':
** Mr. Darcy doesn't believe that Jane Bennet holds any particular feelings for Mr. Bingley, not realizing that Jane is too shy and reserved to express her love openly in a way that would stand out from [[LoveYouAndEverybody how nice she already is to everyone]]. Because of this, and because he (not entirely inaccurately) sees Jane's mother and sisters as appalling {{Gold Digger}}s, Darcy prevents Bingley and Jane from meeting in London and encourages Bingley to break off his courtship of Jane.
** At least Darcy is motivated by genuine concern for his friend's happiness, and regrets his actions when Elizabeth makes it clear that Jane really ''does'' love Bingley. On the other hand, Bingley's sisters rudely rebuff Jane when she tries to visit them in London and participate in the sabotage because they look down on the Bennets, and because Caroline wants to marry Darcy and thinks that will be more likely to happen if Bingley were to marry Darcy's sister Georgiana.
* Mr. Elliot of ''Literature/{{Persuasion}}'' visits his cousin Sir Walter in Bath and quickly sets to work trying to detach him from the charming widow Mrs. Clay--if they produced a son, Mr. Elliot no longer be heir to the Kellynch property and title of baronet. He succeeds, but the narrator hints that Mrs. Clay could successfully turn her charms on Mr. Elliot himself.
* In ''Literature/{{Emma}}'', Emma Woodhouse actively meddles in Harriet and Robert Martin's relationship. He asks her to marry him, but Emma thinks Harriet should marry someone more genteel and persuades Harriet to refuse him (and in such a way that Harriet doesn't realize that she's being manipulated). Mr Knightley tells Emma off for this.
* Dr. Austin Sloper in ''Literature/WashingtonSquare'' goes out of his way to ruin his daughter Catherine and Morris's relationship, starting with a ParentalMarriageVeto and culminating in taking her on a trip to Europe for a full year to test the strength of their affection. His reasoning is that he is convinced that Morris is nothing more than a GoldDigger after his family's fortune. [[spoiler: He turns out to be right.]]
* In Literature/TheZombieKnight, Geoffry's grandfather did this to his mother. Primarily, it was to create a suitable host for an [[HumanoidAbomination aberration]], bet he does admit that he also [[ItAmusedMe thought it was funny]].
* Carmen in ''[[Literature/TheSisterhoodOfTheTravelingPants The Second Summer of the Sisterhood]]'' sabotages her mother's new relationship out of envy (of her mom being happy and in love) and jealousy (she's not used to someone else being important in her mother's life). She accuses her mother of making a fool of herself and neglects to pass on a message from the boyfriend, and thus succeeds in getting her mother to break off the relationship.
* ''Literature/SweetValleyHigh'''s Jessica Wakefield and her like-minded friends have done this whenever they've wanted a guy in a relationship for themselves. Jessica has even done this to her own brother Steven, trying to break up him and girlfriend Tricia because she doesn't think she's good enough for him. Then even after he gets together with her friend Cara--something that she ''wanted''--she tries break them up too, having decided for herself that their relationship is boring and that they need to see other people.
* In ''And I Darken'', Lada and Mehmed are madly in love, even though their relationship is highly tenuous because of Lada's [[MyCountryRightOrWrong desire to return to Walachia]] and [[VirginTension refusal to have sex with him]] and Mehmed's frequenting of his RoyalHarem. Radu, also in love with Mehmed and a master manipulator, is constantly tempted by knowing exactly how to push them apart, and [[spoiler: he gives in, tells Lada their father has died against Mehmed's wishes, and insinuates that Lada is weak for staying in Walachia. His words push her to reject Mehmed's marriage proposal and leave the sultanate and the empire. While he ends their relationship, they're still in love.]]

[[folder:Live Action TV]]
* In the sixth season of ''Series/{{House}}'', House decides to try to break up Cuddy and Lucas after deciding that he might just be interested in the former.
* In ''Series/SugarRush'', the efforts of Sugar to sabotage the relationship between Saint and Kim rather indicate that she's not being honest about having no interest in the latter.
* In ''Series/TheBigBangTheory'', Evil Creator/WilWheaton sabotages Leonard and Penny's relationship in order to win a ''bowling game''!
** When Penny briefly dates Stuart the comic bookshop guy, Leonard crosses to the dark side by giving Stuart some nonsensical and completely wrong dating advice. But being Leonard, he agonizes about using his powers for evil.
* On ''Series/GossipGirl'', this is Blair's MO. And not just for own ex-boyfriends - she's perfectly happy to break up any new relationships that might make Serena unhappy too. Chuck, as well, loves to mess with any relationships that would a) stop Blair being with him or b) distract Nate from their friendship. And Jenny does this occasionally. And Vanessa - oh, screw it, let's just say ''Gossip Girl'' is built around this trope and leave it at that, okay?
* On ''Series/HowIMetYourMother'' Lily has done this to Ted ''six times'', each time because she thinks the girl Ted's dating is a bad fit for [[TrueCompanions their group of friends]]. Methods range from planting a woman's earring in Ted's bed so his girlfriend thinks he's cheating on her, to planting a ''Creed'' CD in the girlfriend's apartment so that Ted becomes disgusted with her, to dressing up in the girlfriend's Darth Vader costume, pretending to be her, and telling Ted they should see other people.
** Later on, Lily is called upon to break Barney and Robin up, but a sudden bout of ComplexityAddiction almost does her in.
* Happened all the time on ''Series/{{Rome}}''.
* This is pretty much Diana Fowley's job during season six and seven of ''Series/TheXFiles''. She's working for the Syndicate to lure Mulder, but whether her true aim in breaking up Mulder and Scully is professional or personal (she's Mulder's ex-partner and may or may not be his ex-wife) is up to interpretation. She plays off Mulder's previous trust in her, and almost succeeds in breaking them up. [[DieForOurShip To the delight of many a shipper]], she is [[DeathOfTheHypotenuse killed off]] in the early parts of season seven.
* The season 4 finale of ''Series/ICarly'' had a revelation that Sam likes Freddie. It's quite possible that her actions in "iSaved Your Life", where she completely fucked up Carly and Freddie's newly formed relationship by planting seeds of doubt in Freddie's mind was a subconscious desire to sabotage the relationship to keep Freddie away from Carly.
** [[MamaBear Mrs. Benson]] actually tries to do this in "iCan't Stand It". In a way, she's right to be upset by Freddie and Sam's relationship. However, the last few minutes of the episode shows how much she delighted in ruining the relationship. Maybe she's just a ControlFreak?
* In pretty much any episode of ''Series/{{Glee}}'' in which Finn Hudson is dating somebody not named Rachel Berry, you'll find Rachel trying some form of this, by means including: staging singing lessons that are intended to turn into something a lot less innocent; dramatic changes of appearance (fortunately Kurt was onto her and [[LaserGuidedKarma ensured it didn't work]]); informing Finn that his girlfriend is pregnant by another boy; duetting with other boys (particularly if it's the boy who got his first girlfriend pregnant) to make Finn jealous; and encouraging him to distrust his girlfriend and ''spy on the boy a blind item in the school newspaper implies she's cheating with'' in company with, you guessed it, Rachel Berry. Every single one of these backfires on her in some way. You'd think she'd have caught on by now, but no such luck...
* Mary of ''Series/DowntonAbbey'' tells [[spoiler: her sister Edith's suitor]] that [[spoiler: Edith]] was looking for an "old bore" as revenge for [[spoiler: Edith]]'s spreading Mary's DarkSecret.
* ''Series/{{Friends}}'': Phoebe does this to Monica and Chandler a few times, whether accidental or deliberate, through playing on Chandler's fears as an InsecureLoveInterest. She tells him Monica saw her old boyfriend [[{{AlwaysSomeoneBetter}} Richard]] and later introduces Monica's 'soulmate' ''right in front of him''. (And AFTER they're married). Thanks to Monica and Chandler's strong relationship nothing sticks and the only result is several heartwarming scenes of Monica promising Chandler is the love of her life and she's not interested in anyone else. It's not clear if Phoebe is just being her usual CloudCuckooLander self, or a GreenEyedMonster, that they're happy and she isn't.
** Rachel tries to do this several times regarding the relationships of whatever man she she wanted for herself--trying to keep Ross and Julie from sleeping together, convincing Bonnie to shave her head, discouraging other women from pursuing Tag by telling them he's gay, telling Charlie incorrect information about Joey, etc.
* In the ''Series/{{Austin and Ally}}'' episode "Families & Feuds", Austin Trish and Dez break off the relationship between Dez's {{ArchEnemy}} Chuck and his sister Didi.
* In ''Series/{{Merlin|2008}}'', Morgana tries and fails to break up Gwen and Arthur in "Queen of Hearts" but succeeds masterfully (though temporarily) in "Lancelot du Lac."
* In the ''Series/{{Seinfeld}}'' two-parter episode "The Raincoats", Newman tells the father of Jerry's recent girlfriend about how they acted during ''Film/SchindlersList'', resulting in him forbidding Jerry from seeing his daughter ever again. Naturally, Jerry is pretty ticked off at Newman the next time they cross paths.
* A standard SoapOpera trope. At least 90% of the drama couples experience is due to some nasty outsider trying to interfere. Either a jealous would-be lover[=/=]ex-lover of one half of the couple, or a disapproving family member.
* ''Series/Daredevil2015'': Season 2 sees Stick use Elektra to sabotage Matt's relationships with Karen and Foggy in order to bring Matt into his war with the Hand.
* Uncertain of whether or not he's ready to move in with his girlfriend, rather than simply telling her that, ''Series/{{ER}}'''s Doug Ross more or less lets her catch him with another woman. Only as she's storming off does it occur to the idiot what he's done, but she dismisses his pathetic pleas of "It won't happen again" by practically laughing as she declares, "Yes, it will."

* ''Theatre/MuchAdoAboutNothing'': Don John to Claudio and Hero, mostly ForTheEvulz.

[[folder:Video Games]]
* In ''VisualNovel/TokimekiMemorial 2'', [[spoiler: KnightTemplarBigBrother Kaoru "Sou-Banchou" Ichimonji]] will constantly try to do this in [[spoiler: Akane]]'s storyline. Resolved to prevent any boy to hurt her little sister's feelings, and also fearing to lose her (who's his sole family) if she ever hooks with a guy, he will sic at you [[{{Delinquents}} his underlings]], then will fight you in person, will barge in the scene if he feels you're too close from her, and in ''Memories Ringing On'', will even go as far as [[spoiler: trying to sabotage your wedding ceremony preparations with her by threatening the assembly hall's clerk of obstruction of business]]! Said sister is ''not'' very pleased by her brother's antics, and constantly resolves them with a MegatonPunch.
* One of the selling points on the back of the ''VideoGame/MisterMosquito'' boxart.
* In ''VideoGame/CaptainMorganeAndTheGoldenTurtle'', Chief Chemi'n doesn't want his cousin Tana to hook up with Chief Bajari, and so convinces the [[WhatIsThisThingYouCallLove clueless-about-love]] Bajari that any "weird feelings" Bajari gets when thinking about Tana are an illness caused by Tana putting a curse on him. Morgane sets him right.
* ''VideoGame/Fallout3'' has a scenario where the PlayerCharacter must engage in this ForTheEvulz. In the ''Tranquility Lane'' quest which you must complete in order to advance the main story, you must plant evidence of affairs on both sides to break up a married couple with a kid - just to make the kid suffer through his parents breaking up. All because TheSociopath MadScientist running the TranquilityLane simulation likes to inflict miseries on his test subjects “[[ItAmusedMe for his amusement]]”.

[[folder:Web Comics]]
* In ''Webcomic/GeneralProtectionFault'', Trudy steals Ki's stuffed animal "Mr. Pookel" and leaves it where Nick will find it so that he'll learn her screen name. He's upset with her for not telling him in order to test his loyalty, but ultimately forgives her.
* ''Webcomic/{{Homestuck}}'' has a variant skewed a bit by the nature of troll romance. Basically, trolls have four romantic quadrants - "genuine love", "MoralityPet", "mediation between two others" and "mutually destructive hatelust" - and you're generally expected to have relations with a given person confined to only one quadrant. As a result, at one point CasanovaWannabe Eridan attempted to sabotage Feferi and Sollux's "genuine love" romance by trying to make Feferi mediate between himself and Sollux, which would push them out of their preferred quadrant.
* Some characters in ''WebComic/MenageA3'' aren’t above meddling with others’ romantic lives for their own purposes. Two notable instances:
** Sonya sets out, rather ineptly, to break Zii away from Erik. That relationship does eventually come apart, though only partly and indirectly because of Sonya’s efforts.
** Later, Lynn tries to separate [=DiDi=] from Zii — by the oddly honest method of telling [=DiDi=] that’s what she wants, while casually pointing out that the relationship might have practical problems when [=DiDi=] starts pursuing her wrestling career.
* In ''WebComic/SandraOnTheRocks'', Eloise wants to break up the relationship between Sandra and Pierre, who she wants for herself. Her methods get distinctly over-complicated, mostly because she also wants to destroy Sandra completely, for various reasons.
* In ''WebComic/TalesOfSchlock'', Manoa tried to do this to her own relationship. Her main squeeze Deedo started showing signs that he wanted a more serious relationship. Manoa, who had been wary of relationships ever since her boyfriend impregnated and left her, wanted to break up with him. She demanded that he have constantly sex with her and she planned to end the relationship when he was too wore out to deliver. Luckily, Bodacia gave Deedo a shake that increased his sex drive enough to meet Manoa's demands.

[[folder:Western Animation]]
* An episode of ''WesternAnimation/AmericanDad'' has a subplot involving Hayley and Steve trying to break up a couple so they can respectively have the boyfriend and girlfriend themselves. [[GoneHorriblyRight It ends up going too well]] when the resulting fight at a park ends up getting physical enough to ''[[FridgeHorror at least]]'' [[AmusingInjuries horribly maim the couple]] (the boyfriend was pushed into a barbecue by accident, which burns his face and partially sets him on fire, scaring the girlfriend who falls into a creek where she's attacked by an alligator).
* WesternAnimation/{{Archer}} tries to get his ex back by manipulating recordings of her current boyfriend in order to make it look like he's cheating on her. She doesn't believe him, but still appreciates the effort.
** Archer's mom also purposely drives Lana closer to her boyfriend to get her away from Archer, because while Lana and Cyril are the OfficialCouple, she can see the UnresolvedSexualTension between her and her son.
** And Archer's "Operation Something About I Rescue Lana and She Begs Me to Take Her Back, so Then [[DrivenToSuicide Cyril Commits Suicide.]]"
** Also Archer's attempt to separate his mother from his favorite actor Burt Reynolds by forging an insulting note with Burt's handwriting and he did it because he can't stand the idea of his favorite actor dating his mother
** Outside Archer's attempts, the rest of the main group tried to separate Archer and Lana because they got sick of how well their relation had been going and made them feel underrated, so they planned to make Archer cheat on Lana with his ex-fiancee Katya, but Archer confessed how hard was for him stay true and loyal to Lana and leave behind part of his old selfish self, which makes Katya accept their relation and make the rest regret being jealous of him; but although they tried to abort it, the group's plan worked when Lana found Katya's vagina on the sink
* The ''WesternAnimation/AsToldByGinger'' episode "Wicked Game" has Dodie and Macey teaming up with Miranda and Mipsy to break up Ginger and Darren. [[SpoiledSweet Courtney]] overhears their plans and warns Ginger about it, and sets up a conference call with everyone so she trick them into discussing everything they've done with Ginger and Darren on the other line.
* Helga always fails at this in ''WesternAnimation/HeyArnold''.
** However at one point her plan was actually noble as the girl he was with was just romancing him so he would win a Sand Castle contest for her where she then planned to dump him and share the prize with her boyfriend. However because Arnold came across her EvilGloating over the situation he wouldn't believe her when she tried to tell him of the plan.
* ''WesternAnimation/{{Kaeloo}}'': One episode had [[{{Jerkass}} Mr. Cat]] show Quack Quack some (obviously fake) photos of his girlfriend Eugly cheating on him to cause them to fight as part of an [[BatmanGambit elaborate scheme to]] [[ItsAllAboutMe he can get Kaeloo to be his date at a Valentine's Day party]].
* ''WesternAnimation/KingOfTheHill'': Peggy sabotages Lucky & Luann's relationship.
* The SeriesFinale of ''WesternAnimation/MyDadTheRockStar'' has Quincy trying to break Willy and Alyssa up because he thinks that if they're together, [[ThirdWheel they wouldn't want him hanging around getting in their way]].
* ''WesternAnimation/TheSimpsons'':
** Once had Bart try to break up the relationship of Laura Powers, his PrecociousCrush (with the added motivation that the person she was going out with had bullied him).
** In an earlier episode, when his best friend Milhouse started 'dating' the new girl at school, Bart tipped off the girl's OverprotectiveDad so Milhouse would hang out with him again. He ended up regretting it.
** In another episode, Milhouse's parents (who several seasons back had a nasty ToiletSeatDivorce) are getting back together. Which seems great at first, except that Milhouse starts to feel that they're ignoring him. He complains about this to Bart, and Bart sees a TeenDrama on TV wherein a girl angrily dumps her boyfriend because she found another girl's bra in his room. Bart steals one of Marge's bras and leaves it in the Van Houtens' bedroom. But because the bra had Marge's name sewn into it, it poses a threat to Homer and Marge's marriage as well. [[spoiler: Homer and Marge reconcile over the fact that it was a big misunderstanding.]]
* In ''Saddlesore Galactica'', Lisa falls for a cute boy while at a dude ranch. Later on she meets a girl their age who knows him and is looking forward to meeting him at the upcoming dance. Lisa, assuming it's his girlfriend, deliberately sends her down the wrong trail, which makes her get lost, but eventually she feels guilty and helps find the girl. When she confesses to the boy, he reveals that it's his ''sister'' and he's so disgusted by Lisa's actions that he never wants to see her again.
* ''WesternAnimation/TheSpectacularSpiderMan'' - Aunt May finds out that Peter might have a date with an older woman who isn't Mary Jane, and therefore tracks the woman down and pressures her into breaking it off. And she gets away with this.
* A non-romantic version happens in the ''WesternAnimation/SpongeBobSquarePants'' episode "Naughty Nautical Neighbors" where Squidward provokes a fight between [=SpongeBob=] and Patrick that ends their friendship for no reason other than being a jerk. However, both of them then want ''him'' to be their new best friend and drive him crazy to the point that he has to make them friends again.
* In the first season of ''WesternAnimation/TotalDrama'', believing they are forming an alliance that could threaten hers, Heather does this to Gwen and Trent. To make it worse, due to the misunderstanding, everyone votes Trent off.
* Diaspro in ''WesternAnimation/WinxClub'' is in love with and originally engaged to Prince Sky. However, Sky falls in love with Bloom and breaks up with Diaspro. Diaspro is still in love with Sky and tries to brainwash him with a love potion. When this fails, she turns to more conventional means such as not letting the two spend time together and feeding the two misinformation in an attempt to drive them apart. She's helped when Sky's father declares her his liaison, giving her some power over Sky.
* In the beginning of season 3 of Rick and Morty, Rick got himself arrested by the galactic federation as part of a plan to destroy it from inside and to get revenge on Jerry for wanting to sell him off to the bureaucrats, which once Rick came back to Beth with the kids, he can pose himself as a hero that got rid of the federation's rules, Jerry instantly tries to prove again that Rick is a complete monster for making him lose his job (while he ignored that his family was suffering with the new government), Jerry then makes Beth choose between him and Rick, which obviously chose Rick as he made everything back to before the aliens colonized earth.
** For unlucky Jerry, as he was moving out of the house, no one seems to care about him leaving or even stopped him from leaving, also the wind was calling him loser
** On one episode which focused on Rick and Jerry, Jerry now lives in self loathing regret of leaving his family in a decaying motel room, and once Rick drags him to a fake adventure, he indirectly learns that his divorce was Rick's fault, so he invite Rick to a rollercoaster which Jerry knows some assassins will be to kill him to both get revenge on Rick for causing Jerry's divorce and selling weapons to the assassins' enemies, but just as they were on the ride, Rick admitted his part on their brake up and sincerely would tell the truth to Beth, unfortunately it was too late for Jerry to abort the murder attempt without Rick knowing his part in it, and the dying hitman admitted he was part of the assassination. Just as Jerry tried to explain himself there, he was being eaten by an alien snake and as he was half swollen, he lashed at Rick for stealing his family, which he replies on how he uses his pity and coward ways to convince everyone into helping him survive and makes him reflect on how he is also ruining everyone's life. After escaping the murder attempts, Rick and Jerry agreed to keep secret about the murder attempt and Rick's part on their divorce, and also made Jerry want to become stronger to win Beth back