A gentle RetCon to allow a previously unmentioned [[OldFlame love-of-their-life]] to pop up for a main character in an episode. Characteristically a TemporaryLoveInterest, this is a simple way to skip all the boring foreplay and jump right to the intensity. Sometimes the long absence and sudden reappearance is explained by a FallbackMarriagePact.

Usually, it ends in death, PutOnABus, [[BusCrash death on a bus]], or with some similar ResetButton; a less dramatic way to end it is for the couple to simply [[OldFlameFizzle realise they don't have the same connection they once did]]. It's theoretically possible that this kind of reunion would result in the old romance rekindling to its former glory or something still greater, but in most cases StatusQuoIsGod and this would create too many difficulties.

Often, the character with the NewOldFlame is [[AbsenceMakesTheHeartGoYonder already (re-)married]], and it turns out it's not just the audience that's surprised.

Clumsily done, this can mess with the memory of a previous relationship carefully established over a StoryArc, and anger [[{{Shipping}} 'shippy]] fans. Elegantly done, it can leave us with TheWoobie.

The inverse situation, where the character does remember the love-of-their-life, but the reunion cures them of it, is OldFlameFizzle.

Compare to RememberTheNewGuy, RomanticFalseLead, TheOneThatGotAway, RelationshipRevolvingDoor. Contrast PsychoExGirlfriend. See also OopsIForgotIWasMarried when the old relationship causes ''legal'' problems for a current one.


[[folder:Anime and Manga]]
* Done in ''Manga/HayateTheCombatButler'', concerning the past of [[spoiler:Athena]] and Hayate. Except that, while Hayate still holds a flame for her, it's not clear if she has the same for him. Their former relationship was left at the point of her[[spoiler: and/or the spirit possessing her,]] wanting to kill him.
* This trope is the basis of ''Manga/SekaiichiHatsukoi'' where the main character works under his high school crush at his new job. Played with in that he does not even recognize that person.
* In ''Manga/SoulEater'' Marie's NewOldFlame Joe Buttakaki shows up. They both have leftover feelings for one another and are about to rekindle their relationship when said NewOldFlame suffers from [[spoiler: [[BusCrash Death On A Bus]]]]. It set off the Stein/Marie shippers, since Stein is the one who consoles her.
* Done in the Spain arc of ''Anime/AshitaNoNadja'', with [[spoiler: Carmen]] as [[spoiler: José]]'s NOF. [[spoiler: It really doesn't go well.]]

[[folder:Comic Books]]
* In the ''Comicbook/{{Daredevil}}'' comics, ComicBook/{{Elektra}} was introduced as Matt Murdock's previously unmentioned college girlfriend and love of his life. She died, but got better.
* Lori Lemaris was this in UsefulNotes/{{the Silver Age|of Comic Books}} ''Franchise/{{Superman}}'' comics: Clark Kent's sweetheart from college (who turns out to be secretly an Atlantean mermaid).
* Glittering Goldie is [[ComicBook/DisneyDucksComicUniverse Scrooge McDuck]]'s one true love. They break up due to {{poor communication kills}} ... and some accident and bad choices and such. "The Prisoner of White Agony Creek", "Hearts of the Yukon" and "Last Sled to Dawson" show as much.
* In the epilogue of ''ComicBook/DarkReign'', during the funeral of [[spoiler: Sentry]], Rogue reveals that they were in a relationship.
* Billy Powers, an old high school boyfriend of Michael's, who turns up in the ''ComicBook/MsTree'' story "Drop Dead Handsome". It doesn't feel especially forced as very little about Michael's high school days had been revealed. It ends [[FatalAttractor about as well as any of Michael's relationships do]].
* A while back, we learned that [[Comicbook/IncredibleHulk Bruce Banner]] of all people had an incredibly hot girlfriend in college, but dumped her because he was a neurotic twit. She's now an evil HotScientist, and still bitter about the breakup.
* In an issue of Matt Fraction's ''[[ComicBook/TheDefenders Defenders]]'' series, Comicbook/DoctorStrange accidentally brought his college crush BackFromTheDead. They spent a few days "renewing acquaintances" before he had to tell her what he'd done.
* Happens to {{Wolverine}} all the time, due to his long life and ExpansionPackPast. Notably, when Jean Grey first manifested as the Phoenix way back when, Wolverine spend some time thinking about how he'd never loved anyone as much as he loved her. Given that at least a half-dozen apparently serious relationships have since been added to his pre-X-Men days, it suggests that either he didn't really love them, or he loved Jean (a girl who, at the time, regarded him as nothing but annoying) beyond all reason.
* In ''ComicBook/BirdsOfPrey'', readers learn that ComicBook/BlackCanary has an ex-husband whom she married (and divorced) while in college.

[[folder:Fan Works]]
* The ''VideoGame/StarTrekOnline'' Foundry mission [[Recap/StarTrekOnlineFoundryTheInterwarpExperiment "The Interwarp Experiment"]] has this as one option for the backstory between the PlayerCharacter and Commander Jerrod Dalton. He was either your madly-in-love soulmate at Starfleet Academy, or he was your bitter rival. [[spoiler:He dies of radiation poisoning during the mission.]]

* In ''Film/TomorrowNeverDies'', the villain's wife, Paris Carver, is an old lover of Film/JamesBond. Given Bond's [[ReallyGetsAround history]], this probably happens a lot.
* The titular [[Disney/RobinHood Robin Hood]] and Maid Marian, who had been childhood friends and were in love before they were separated for some time and later reunited.
* In ''Film/PiratesOfTheCaribbeanOnStrangerTides'', Jack has one in TheDragon, Angelica, [[spoiler:Blackbeard's daughter]]. Notable in that she is the ''only'' woman he has ever truly loved.
* Done with a twist in ''Film/RobotAndFrank''. Frank is smitten with Jennifer, the small town's librarian. As it turns out, [[spoiler:she's actually his ex-wife from before, but he doesn't remember due to his growing Alzheimer's.]]
* ''Film/LaHabanera'' kicks off with Astrée, a young Swedish woman vacationing in Puerto Rico, falling in love with a local landowner and impulsively deciding to stay. A ten-year TimeSkip reveals that the marriage has gone bad. Then the film cuts back to Sweden and reveals Dr. Nagel, her old boyfriend from the backstory before she came to Puerto Rico. Naturally, Dr. Nagel winds up going to Puerto Rico too.

* ''Literature/TheHollows'': Pierce, Rachel's guy she compares all other guys to, shows up even though we have never heard of him before. When explaining his back story, they bring up that he had helped her defeat an undead vampire. While this incident is occasionally mentioned over the course of the books, this is the first time where it is mentioned that she had help.
* In L. Jagi Lamplighter's ''[[Literature/ProsperosDaughter Prospero Lost]]'', Ferdinand reappears. With even a reasonable explanation of why he didn't show up for their wedding. Then it turns out he's a fake, then it turns out -- [[DanceTropeDance let's just say this trope gets zigzagged in this work.]]
* Chad in the ''Literature/TalesOfAnMazingGirl'' story "Weirder Spreadsheets of love [[spoiler:it turns out he was less a lost lover then a guy she slept with once to boost his popularity]]
* The Franchise/StarTrek novel ''Shadows On A Sun'' brings back [=McCoy=]'s ex-wife and has the start of a romance before [[spoiler:she dies.]]
** [[LampshadeHanging Lampshaded]] in ''Literature/HowMuchForJustThePlanet'', in which [=McCoy=] ribs Kirk about how many of the people they've met who were his girlfriend at one point or another, and even Spock joins in, stating that the doctor raises a "valid statistical point". Surprising no-one ''except'' Kirk, he briefly dated the ambassador they're transporting around eighteen years ago, and just misremembered her name. [=McCoy=] excuses himself and Spock, presumably so he can die laughing somewhere in private.
* In ''[[Literature/TheFirebringerTrilogy Son of Summer Stars]]'', [[spoiler:Ses]] eventually reconnects with [[spoiler:Calydor]] after [[spoiler:Korr]] dies. It's all but outright stated to actually work out for them.
* ''Literature/LegacyOfTheDragokin'': Jago had a close relationship with Daniar in the past; expecting-a-child close. However he is not mentioned in the previous book, ''Literature/TrappedOnDraconica'', where Daniar starts a relationship with Kalak that ends with marriage and a kid by the time he is introduced.
* [[Literature/{{Dragons}} The Last Dragon Chronicles]]: Arthur Merriman to Liz Pennykettle.
* In the ''Literature/{{Discworld}}'' novel ''Discworld/LordsAndLadies'', though neither ''character'' is actually new, it does come as a bit of a surprise to learn that Mustrum Ridcully and Esmerelda Weatherwax were, at one time, An Item (and are explicitly stated to be ''married'' in an alternate reality).
* In ''Literature/{{Overenskommelser}}'' by Creator/SimonaAhrnstedt, Lily Tremaine is this to Seth (the story's male protagonist). But in the end, [[spoiler: they break off their engagement, so Lily can be with her new love Alexandre and Seth can be with Beatrice (the story's female protagonist)]].

[[folder:Live Action TV]]
* Frasier's first wife in ''Series/{{Cheers}}''. She appeared twice more in ''Series/{{Frasier}}'', each time played by [[TheOtherDarrin a different actress]].
* ''Series/BabylonFive'':
** Sheridan's ''real'' first wife in the fifth season, Captain Elizabeth Locksley. They were only married for a couple of months before they realized that, both of them having dominant personalities, they couldn't really make it work long-term. Interestingly, in this case the "former wife" angle wasn't used for any of the normal reasons, but to explain why Sheridan knew he could trust her, even though she'd fought on the opposite side of Sheridan during the war. This is brought up again in ''Series/{{Crusade}}'', just to tease Gideon about his hero.
** Lise Hampton, Garibaldi's former significant other, shows up mid-fourth-season (after a couple mentions in the first season) married to his new boss, [[CorruptCorporateExecutive William Edgars]]. To Garibaldi's credit, he kept things remarkably professional. In a strange twist (for this trope, not for the overall storyline, in which you could see it coming a mile off), Edgars [[DeathOfTheHypotenuse dies]] (no, Garibaldi didn't do it, nor did he even necessarily ''want'' it to happen) and the two get back together by the end of the season. Not only that, but Garibaldi essentially inherits Edgars's financial empire through her (though this is considered a ''side effect'' of the marriage), quitting as security chief and moving to Mars Dome.
** Catherine Sakai, Commander Sinclair's old flame, shows up unexpected on the station in season one. In the season one finale they get engaged. [[spoiler: Sinclair's recall to Minbar and travelling back in time to become Valen put a stop to the wedding, though, and Catherine [[WhatHappenedToTheMouse simply vanished from the story]]. The ExpandedUniverse finally stepped in and wrote that Catherine got yanked through a time rift and it all worked out -- about [[LoveTranscendsSpacetime a thousand years ago]]]].
* ''Series/MacGyver1985'', at least twice, in "Flame's End" and "Jericho Games".
* The same plot mechanism is put to different use (with shades of "LukeIAmYourFather") in ''Series/ThePretender'' episode "At the Hour of Our Deaths", which revolves around Miss Parker's adoptive sister -- never hinted at before, dead by the end of the episode, and never referred to again. The series also included several straight instances.
* Lucille in the last two episodes of ''Series/{{Chef}}'' served this purpose.
* ''Series/DoctorWho'':
** "School Reunion". In the Classic series, Sarah Jane was at most an occasionally ImpliedLoveInterest with tons of chemistry with both her Doctors, and some very subtle ShipTease hints regarding the Fourth Doctor having one-sided feelings for her. This New series episode does away with the subtext entirely and {{ReVision}}s her into TheOneThatGotAway.
** Reconstructed in River Song. She is most likely a new old flame from the Doctor's personal future. When the Tenth Doctor meets her for the first time, she is extremely intimate with him right from the start, even knowing his true name and calling him sweetie and pretty boy. Then she [[spoiler: sacrifices herself to save 4400 people, including the Doctor, and dies in front of him.]] After he regenerates into the Eleventh Doctor, they spend several episodes flirting, during which Amy Pond decides she must be the Doctor's future wife. By the end of the fifth series, he may or may not have proposed to her. (He seems unsure himself whether he just did or not.)
** And now, as of the end of the sixth series [[spoiler: we see on-screen Eleven and River Song getting married.]]
* Jack Harkness and John Hart on ''Series/{{Torchwood}}'', John is also Jack's EvilCounterpart.
** Unsurprisingly, Jack has a few more of these. The radio plays gave us Stella Courtney (from 30 years ago) in ''The Dead Line'', and the Duchess in ''Golden Age'' (very much a NewOldFlame: he hasn't seen her since 1924, she hasn't aged a day.)
** And again from the series itself, Estelle from the episode "Small Worlds". The twist in that case being that Jack is passing himself off as the son of her former lover (himself), apparently not wanting to explain his immortality to her. However, when she's [[spoiler: killed by [[TheFairFolk the fairies]],]] Jack is clearly heartbroken.
** Plus, in ''Children of Earth'', there's Jack's former lover and mother of his daughter. We never meet her as she has already died by this point, but she definitely counts.
** Then there's Angelo in ''Series/TorchwoodMiracleDay'', who ends up the reason this whole mess started. Unfortunately, he comes back [[spoiler:on his deathbed, in a coma, and dies shortly after]].
* Ranger Ben served as one of these for C.J in ''Series/TheWestWing''.
* Happened in an episode of ''Series/{{Angel}}'' when Doyle's ex-wife, Harry, popped in to get their divorce papers signed. Needless to say, Doyle's new love interest Cordelia was surprised by how much that bothered her.
* ''Series/DueSouth'':
** Victoria and Fraser at the end of the first season.
** In season 2, Ray V's high school sweetheart, Irene Zuko, was introduced [[spoiler: and killed]] in the episode "Juliet is Bleeding".
* An episode of ''Series/{{MASH}}'' had womanizing Hawkeye's "one true love" from med school show up.
* Used in the aptly-named ''Series/HogansHeroes'' episode [[ExactlyWhatItSaysOnTheTin "Klink's Old Flame."]] It's played with, though: Klink hears that his old flame is coming to the stalag, but she is now married to an influential general. Knowing that if she rediscovers her old feelings for him, he could end up fired or shot, [[HilarityEnsues he takes drastic measures to make himself as unattractive to her as possible.]] [[spoiler: Ultimately subverted though, as it's later revealed she never got past a handshake with him, and she's actually an underground agent who arranged the 'reunion' to meet with Hogan.]]
* ''Series/BattlestarGalactica2003'':
** Lee Adama is angsty when he is reminded of his ex-girlfriend, whom he ran from after she told him she carries his child. Which is reasonable, just that he is the closest thing to a protagonist in this show, and the first time this is mentioned is the 14th episode of the ''second season''.
** In the minisodes we discover that Gaeta was involved with an Eight model Cylon on New Caprica. It doesn't end well. Although there's been no mention of this up till now, the webisode cleverly works in a previously unexplained NoodleIncident -- what Baltar whispered in Gaeta's ear before he found that ThePenIsMightier.
* ''Series/TheATeam'':
** Although not a lover, one episode is based around the funeral of their old army buddy. There's a lot of tender reminiscing, and even a lingering close-up on a photo of the five of them standing together in uniform. This is made only ''slightly'' less poignant by the fact that ''we've never heard of this guy before, nor will we again''.
** A more traditional version of the trope is "[[TheATeamS2E3TheOnlyChurchInTown The Only Church In Town]]", in which Face's first love Leslie Becktall turns up after a fifteen-year absence. (During which time she's [[TakingTheVeil become a nun]]. Ouch.)
* The war buddy version is seen in the ''Series/{{Firefly}}'' episode "The Message" with Tracey.
* ''Series/StarTrekDeepSpaceNine'':
** Jadzia Dax and Lenara Kahn had technically never met before their one-episode romance in "Rejoined", but the previous hosts of their symbionts were married. The episode is used as a metaphor for closeted homosexuality since their current hosts are both female and Trill law forbids previously related symbionts from resuming their past relationship.
** Played straight in "Profit and Loss", where Quark's old flame from the Bajoran Occupation, a Cardassian pro-democracy activist named Natima Lang, returns to the station. She is never heard from again after this episode and Quark goes back to his old womanizing tricks.
* Dr. Series/{{House}} and the now-married Stacy. More recently, it was revealed that Wilson has been dating his first ex-wife.
** And as of season 7, Cuddy. However, the writers have [[StatusQuoIsGod returned everything to normal]] at the season's end.
* ''Series/MadMen'' introduces an old flame of Roger Sterling's, whom he dated in [[GayParee Paris]] before [[UsefulNotes/WorldWarII the war]].
* Subverted in ''Series/EarthFinalConflict'': William Boone's old flame appears after several years of absence and, in spite of Boone's wife recent death, he's unusually inflamed with passion, something extremely out of character for him. It's later revealed that the Boone's memories of their life together are false and were included in his cyberviral implant as a loyalty test by the Companions, and they had recruited an FBI agent to play the part of the former girlfriend.
** It's also unclear if she really is working against the Taelons or was just saying that to test Boone.
* ''Series/{{Supernatural}}'':
** An oft-ignored season one episode introduces us to [[TheCasanova Dean]] [[TheCharmer Winchester]]'s ex-girlfriend Cassie. We get a glimpse of what Dean looks like in love, and it turns out he's kind of a sap. Sam has fun needling him about it until he realizes who dumped whom and why, and how badly [[TheWoobie Dean]] actually got hurt.
** Another introduced Lisa, who now had a son with a suspicious resemblance to Dean, born about the right time after he knew her. [[spoiler: It's not his]]. Lisa returns [[spoiler: at the end of the fifth season and in the sixth, where Dean settles down with her and she actually has yet to die.]]
** In another episode Dean returns to a foster home where he briefly stayed as a boy. He is then reunited with the girl who was his first real girlfriend. She does not seem to remember who he was but then reveals that she remembers Dean quite well and is still pissed at him for leaving without an explanation the day they were supposed to go to their first dance together. She represents a life that Dean could have had if he chose to remain with the foster family rather than go back to his father and Sam.
* In one episode of ''Series/{{Castle}}'', he and Beckett investigate a murder that took place during the wedding of one of Castle's exes. [[spoiler:There's jealousy from Beckett's side, a lot of talk at the station, and a brief rekindling between Castle and the girl before she does get married and tells Beckett, "He's all yours."]]
* Bobby for Hilda on ''Series/UglyBetty''. [[spoiler:Seeing how he came along towards the end of the series, they ended up getting married in the GrandFinale.]]
* Casey has had ''two'' of these in ''Series/{{Chuck}}''.
** Averted with Chuck's own ex, who was mentioned in the first 5 minutes of the pilot. Of course, he had no idea at that point that she was [[spoiler:a Fulcrum agent and was forced to dump Chuck]]; she also lied about sleeping with his best friend, who never bothered to deny it.
*** There's a good reason for this. Bryce did everything he could to keep Chuck from being recruited ([[spoiler:Chuck's father asked him to]]). Telling Chuck that he ''didn't'' sleep with Chuck's girl would prompt Chuck to investigate further and get dangerous close to either CIA or [[spoiler:Fulcrum]].
* ''Series/{{Charmed}}'' has a variant, where in the first season Prue's love interest is the same guy she dated in high school (which, since he's introduced that way right away, doesn't feel jarring). The "skipping foreplay" part is sort of [[DeconstructedTrope deconstructed]]: they sleep together on the first date of their new relationship, but Prue objects when Piper argues that that's equivalent to sleeping with the guy on the "first date," since they already know each other.
* In ''Series/{{Alias}}'', Noah Hicks, Sydney's former partner, shows up for a few episodes at the end of Season One.
* In ''{{Series/Fringe}}'' season one, Olivia runs into a former flame, Lucas in "In Which We Meet Mr. Jones." Peter also has a run-in with a supposed past lover, Tess, in "The Dreamscape."
* Amanda in ''Series/{{Highlander}}: The Series'' is introduced this way, early on. Duncan's current girlfriend,Tessa,is not amused. (She later comes back after Tessa dies, and they are an on and off couple for much of the series.)
* ''Series/RookieBlue'':
** Det. Jo Rosati is Luke's ex-girlfriend. She joins 15th Division at the start of season 2 and forms a love triangle with Luke torn between her and his girlfriend Andy. [[spoiler: Jo and Luke sleep together which leads to Andy dumping Luke]].
** In season 3 a new rookie joins the division. He happens to be Gail's old boyfriend from before she became a cop. After they broke up he joined the army, served in Afghanistan and then became a cop himself. They still have lots of UST and other unresolved issues since they apparently broke up while they were in Vagas and about to get married.
** In the season 3 finale, Chris' old girlfriend showed up...[[spoiler:with their son.]]
* Tony's ex-fiancee Wendy showed up mid-season 8 of ''Series/{{NCIS}}''. Whether she will become the RomanticFalseLead, or the actual LoveInterest, remains to be seen.
* ''Series/MalcolmInTheMiddle'': Otto's conscience was finally starting to tormenting him for having tricked his rival out of the way so he could marry Gretchen. Otto then invited said rival over. However, when it turned out said rival was still in love with Gretchen all those years, Otto expelled him before Gretchen ever knew he came back.
* On ''Series/TheXFiles'', two Mulder's ex-girlfriends made an appearance, and there were also two past relationships of Agent Scully.
** "Fire": Mulder receives a visit from Phoebe Greene who asks for his assistance on a case. She's his old flame from his university days at Oxford and works now as a Detective in Scotland Yard. They get it on, but she cheats on him once more and at the end she leaves for England.
** "Lazarus": Jack Willis used to be Scully's teacher at the FBI academy and her boy-friend. They don't re-new their relationship, but the case involves a body-switch with the villain and he later dies. Scully is obviously shattered.
** Agent Diana Fowley appeared in the finale of season 5 and was a part of MythArc in season 6. She's Mulder's ex-partner who worked with him on the X-Files and they used to be lovers as well. She might also be his ex-wife. There is some tension between them, but Mulder refuses to follow this path again.
** "all things": Scully used to date her professor from medical school. He reveals that he has been in love with her for all those years and begs her to be with him. She considers it, but ultimately refuses as she doesn't want to ruin his family. In addition, there is all the {{UST}} and WillTheyOrWontThey with Mulder, and this particular episode is one of the hottest candidates for TheyDo.
* ''Series/{{Hustle}}'': Emma encounters new old flame named Joe Ryan, who is everything the grifters are not, in "Old Sparks Come New".
* On ''Series/MyNameIsEarl'', many of Earl's exes have been on The List, including a clingy girl Earl broke up with [[FakingTheDead in a horrible way]], and the last woman he dated before his AccidentalMarriage to Joy, and a [[{{Yandere}} one-legged one-night-stand]]. His [[spoiler: first]] ex-wife Joy is listed several times as well.
* ''Series/NewTricks'': Sandra acquires one in the form of DCI James Larson in "Objects of Desire". This does not end well when James [[spoiler:turns out to be a DirtyCop]].
* In the second series of ''Series/TheHour'', we are introduced to Randall, the new head of news, who, as it turns out, has history with Lix.
* ''Series/TheNewAdventuresOfRobinHood'': In "First Love", Robin's former fiancé Olivia seeks the outlaw hero's help in rescuing her husband.
* In ''Series/OnceUponATime'', Emma's ex-boyfriend and the father of her son, Neal, makes a reappearance in Seasons 2 and 3, creating a difficult situation for her; she's still in love with him, but [[TheFirstCutIsTheDeepest is so stung by the depths of his past betrayal]] that just can't bring herself to trust him. And when you factor in how Neal's best friend/BigBrotherMentor is [[LoveTriangle vying for her affections as well]]...
* ''Series/TheDoctorBlakeMysteries'': In "King of the Lake", the mother of the VictimOfTheWeek turns out to have been Lucien's first serious girlfriend.
* ''Series/StarTrekEnterprise'' introduced Captain Erika Hernandez, captain of the NX-02 ''Columbia'', as Jonathan Archer's ex-girlfriend in season four. Interestingly, they didn't break up for the usual reasons, but simply because he got promoted and she didn't, so their relationship went against regs. After the Xindi crisis, they're again equal in rank, and after a couple of nights mountain-climbing and soul-searching, they rekindle their romance. The later episodes "Affliction" and "Divergence", where Erika reappears, neither confirm nor deny whether said rekindling lasted, but a certain intimacy in the way they look at each other hints that this time it stuck.
* ''Series/FrontierCircus'': Ben encounters one in "The Good Fight". She is now the widow of a CattleBaron who is attempting to drive out a peaceful religious community so she can take their land.
* The second episode of ''Series/{{Eureka}}'' introduces a new head of General Dynamics, after the one from the pilot is ReassignedToAntarctica. He turns out to be Allison's ex-husband (although not the father of her autistic son). They later rekindle their relationship, much to Carter's chagrin, [[spoiler:but he ends up performing a HeroicSacrifice on their wedding day]]. Also, Carter's ex-wife shows up for an episode, but neither has any intention of getting back together.
* ''Series/TheNewAvengers'': The villain in "Obsession" is an ex-fiancee of Purdey who had never been mentioned before.
* In the ''Series/EnemyAtTheDoor'' episode "The Prussian Officer", a woman who comes to live on the island is revealed to be the old flame of, of all people, the SS officer Reinicke. They met and fell in love in Paris, but her family was persecuted for Communist links and he wasn't willing at the time to risk his career in an attempt to protect her. [[spoiler:He still isn't.]]
* Comes up quite a bit in ''Series/StarTrekTheOriginalSeries''. Despite his reputation as a "love 'em and leave 'em" type, Kirk has apparently had several serious relationships and most of the women, such as Areel Shaw and Janet Wallace, still hold tender feelings toward him. Janice Lester, not so much. This occurred again in ''Film/StarTrekIITheWrathOfKhan with Carol Marcus. [=McCoy=] and Chapel also had former love interests appear, sort of.
* ''Series/LawAndOrderCriminalIntent'': In "Palimpsest", Nichols and Burrows investigate a double murder. Nichols discovers that one of victims is an old family friend. The friend's daughter is an old sweetheart of Nichols' who is now suffering from schizophrenia.
* ''Series/FatherBrown'': In "The Face of the Enemy", an old flame of Lady Felicia's--who may or may not be a Soviet spy--attempts to persuade her to leave her husband and run away with him.

[[folder:Newspaper Comics]]
* Many ''ComicStrip/ModestyBlaise'' stories begin with the appearance of an ex-lover of either Modesty or Willie who needs help.
* In ''{{Peanuts}}'', Snoopy once spied an old girlfriend at the beach. He tried to show off surfing, which ended badly. The girlfriend never noticed; Charlie Brown tells him that he saw her with a golden retriever.

* In Creator/DorothyLSayers' ''Theatre/TheEmperorConstantine'', downplayed. Helena is very stiff and formal with Flavius, when they meet years after he divorced her for a political match, but softens enough to ask after his health.

[[folder:Video Games]]
* In ''Trials and Tribulations'', the third game of the ''Franchise/AceAttorney'' series, Phoenix and Mia each get one, Dahlia [[spoiler: (or better said, [[TwinSwitch her twin sister]] Iris)]] and [[spoiler: Diego Armando aka Godot]] respectively.
* In the DatingSim ''Videogame/AlwaysRememberMe'', the NewOldFlame is also a BitchInSheepsClothing trying to convince the AmnesiacLover that she is his current girlfriend when she is really his ex. Needless to say, this irritates his ''real'' current girlfriend, who is working hard to help him regain his memories.

* In ''Webcomic/TheInexplicableAdventuresOfBob,'' Jean's ex-boyfriend Slick Simmons has recently appeared. He has some connection to the town's new [[StockNessMonster lake monster.]]
* ''Webcomic/{{Flipside}}'': In Chapter 30, Bernadette encounters her former lover in Marvallo, revealing the reason for her neurotic insecurity about monogamous relationships.
** This is in addition to the 26 chapters of book 0.

[[folder:Western Animation]]
* Elita One from ''WesternAnimation/TheTransformers'', who showed up, helped Optimus Prime and the gang, and then was never seen again.
** Although she sort of showed up in a later episode in the form of her younger self Ariel.
* Zuko and Mai of ''WesternAnimation/AvatarTheLastAirbender'' -- textbook "skip all the boring foreplay and get right to the intensity." Contrast with the heroic OfficialCouple, who were in the foreplay stage for ''fifty episodes''. In this case we see a flashback of them as childhood friends before the reunion.
* Désirée D'Allure, Monterey Jack's ex-fiancée from the ''WesternAnimation/ChipNDaleRescueRangers'' episode "Love Is a Many Splintered Thing". Complete with a ResetButton, yes.
* Grandpa Lou in ''WesternAnimation/{{Rugrats}}'' had Morgana, who reappears several decades after leaving town believing he'd cheated on her. She only appeared in one episode, but was mentioned several times throughout the season before vanishing entirely.
** From what I can remember, the girl who Grandpa Lou was "cheating on" had fainted (or maybe something of that sort) so he performed CPR. To Morgana it looked like he was making out with her.
** Lou's second wife also qualifies, as she was a USO singer he was crushing on during [[UsefulNotes/WorldWarII the war,]] but they only spoke briefly once back then. 50 years later, they run into each other again.
* Juandisimo was this to Wanda in ''WesternAnimation/TheFairlyOddParents''.
* Lawrence and Linda in ''WesternAnimation/PhineasAndFerb'' are probably this. They dated sometime in the late 80s or early 90s, but eventually broke up and married other people. They eventually reunited and got married after they had kids with their previous spouses.
** Likewise, Linda was revealed to have one in Dr. Doofenshmirtz.
* Unity, a HiveMind in ''WesternAnimation/RickAndMorty,'' who was called the love of Rick's life, even compared to Beth's mother. She breaks up with Rick after a brief fling, [[spoiler: and this causes him to attempt suicide.]]
* In the ''WesternAnimation/DefendersOfTheEarth'' episode "The Lost Jewels of Tibet", Mandrake meets up with a female explorer named Atascadero, who is clearly an old flame of his; the interactions between the two characters suggest that they still have feelings for each other. However, when (at the end of the episode) Atascadero asks Mandrake if he would like to go on "another mad adventure" with her, he tells her that, while he would like to join her, his sense of duty orders him to stay with the Defenders. After this, Atascadero is neither seen nor mentioned again.