History Main / LoveMakesYouEvil

Sometimes, the person who will go to extreme, evil lengths for love is a villainous StalkerWithACrush who has no grasp [[WhatIsThisThingYouCallLove of the true concept of love]], and [[TheFarmerAndTheViper emulates it as best he can]]. [[KnifeNut With knives.]]

** Another example happens in Episode Five. [[spoiler: Scarlet Witch became a ZombieInfectee, and Vision's love for her drove him to develop a cure instead of immediately killing her. While he did manage to create a working cure for the plague, Wanda's powers prevented her from being affected by it. Even worse, it's revealed that in order to keep her hunger satisfied in the meantime, Vision lured dozens of people to his base to be EatenAlive, even keeping T'Challa around and [[AnArmAndALeg cutting off limbs to feed her]]. While he ''does'' [[RedemptionEqualsDeath redeem himself by sacrificing the Mind Stone]] to Spider-Man's survivor group, it happens far too late as his actions lead Wanda to break free and kill several members of the group.]]

** ''Film/DoctorStrangeInTheMultiverseOfMadness'': Though the corruption of the Darkhold is also a factor, Wanda Maximoff transforms into the dreaded multiversal conqueror Scarlet Witch because she wants to move to a universe where her children truly exist.

* Non-romantic love, but Loki in ''Film/{{Thor}}'' loves his father and his Asgardian home very, very much. His desire to be acknowledged and loved on par to his brother Thor leads him to attempt genocide.

An especially unpleasant extent of how LoveHurts and [[LoveMakesYouCrazy Makes You Crazy]]. Might start with, or end in, DestructiveRomance. Since this is both a Love Trope and a Betrayal Trope, '''there will be spoilers'''. See {{Yandere}} for a version of this trope that is mixed with, or camouflaged by, {{Moe}} tropes. If the character who is in love was evil before falling in love, it's a VillainousCrush. Contrast EvilVirtues, where a villain has love as a good trait, or LoveIsAWeakness, where a (usually villainous) character avoids love for fear it will spoil them.

* ''Fanfic/ChildOfTheStorm'' has, towards the end of the first book and in the sequel, [[spoiler:Harry]] teeter on the edge of this trope. He mentions after the fact that if his best friend (who he's about one step away from being MindlinkMates with) had died in the ''Bloody Hell'' arc (which she very nearly did), he was willing to threaten the Council Elite of Skyfathers with his unleashing [[spoiler:the Phoenix - risking unleashing the original Dark Phoenix and ''destroying the Nine Realms'']] - if they didn't bring her back. That said, he also added that if they'd called his bluff, he'd have gone somewhere else, somewhere safer, before unleashing the Phoenix to do it himself. However, [[spoiler:Thor]] and [[spoiler:Jesus]], somewhat horrified, point out how awful an idea this would have been, risking the DisproportionateRetribution of multiple pantheons of JerkassGods, and the second coming of [[spoiler:the Dark Phoenix]]. While [[spoiler:Harry]] seems to come to accept this, this is not the only time that he's noted as being willing to do some very frightening things for the sake of/to avenge his loved ones - methodical dismemberment (of a vampire, [[spoiler:Dudley Dursley]]) is definitely a representative example. However, ThePowerOfFriendship and ThePowerOfLove hold him in check, as well as that it unnerves him as much as anyone else.

** This incarnation of Jervis Tetch, aka the Mad Hatter, is originally a [[IntelligenceEqualsIsolation lonely genius]] who develops MindControl devices for Wayne Tech Enterprises. He falls hard for a secretary named Alice, but she has a long-time boyfriend, and though it's a struggle, Tetch genuinely tries to leave her alone because he knows that it would be wrong to force them apart. It isn't until he gets a chance at a date with her (Alice and her boyfriend fight, and Tetch decides to take her out on the town) that he develops the Hatter persona and starts using his technology for nefarious purposes--and when Alice returns to her boyfriend, Tetch goes JumpingOffTheSlipperySlope and goes completely insane.

** Other characters that represent this trope are Mr. Freeze and the Mad Hatter.

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[[quoteright:350:[[Film/RevengeOfTheSith https://static.tvtropes.org/pmwiki/pub/images/SithAnnie_6158.jpg]]]]
[[caption-width-right:350: The love story that enslaved a galaxy.]]

!!Examples:

* [[FanFic/SeventhEndmostVision]]: this seems to be why Vincent is a monster instead of his canonical antihero status- his love for Lucrecia means he'll follow her to the ends of the earth.

* ''VisualNovel/HatofulBoyfriend'' has a route called "Bad Boys Love". Why is it called that? Most likely because it's about [[spoiler:the human protagonist being KilledOffForReal, her main love interest being traumatized to hell and back, and the genocide of the entire human race being set up]] all because of [[spoiler:Doctor Shuu]]'s unrequited love for [[spoiler:Ryuuji Kawara]] that caused him to do his best to [[ThePromise fulfill his promise]] to said love to [[spoiler:fulfill any wish of his son]] [[MadScientist in the best way he knew how]]. Of course, [[spoiler:Doctor Shuu wasn't the most stable of creatures to begin with, but it doesn't change the fact that ''none of this'' would have happened if he hadn't loved Ryuuji enough to take his promise to him so horribly seriously]].

* Becomes a DiscussedTrope in Archie Comics' ''Comicbook/MegaMan''. Agent Stern warns Dr. Light that giving his robots emotions is a ''really'' dumb idea because of this trope and gives some nice {{Foreshadowing}} of the ''VideoGame/MegaManX'' series in the process.

* In the fourth episode of ''WesternAnimation/WhatIf2021'', Doctor Strange ends up this way since he loses his girlfriend Christine in a car accident, rather than shattering his hands like in [[Film/DoctorStrange2016 the prime reality]][[note]]The point of divergence from the film is that Stephen and Christine never broke up beforehand[[/note]]. Stephen becomes unable to accept her death and studies magic to learn how to reverse time and prevent it. [[spoiler He ultimately plans to perform a DangerousForbiddenTechnique to save her since [[YouCantFightFate her death is a fixed point in time]]. Good news: [[BeCarefulWhatYouWishFor he does manage to save her]]! Bad news: Without her death, he would have never mastered the Time Stone in the first place, and the resulting RealityBreakingParadox ends up ''[[ApocalypseHow/ClassX4 destroying the universe]]'' and [[AllForNothing kills Christine anyway]], leaving Strange alone in a black void and [[MyGodWhatHaveIDone brought to tears over what he's done]].]]

* In the fourth episode of ''WesternAnimation/WhatIf2021'', Doctor Strange ends up this way since he loses his girlfriend Christine in a car crash, rather than simply losing control of his hands like in [[Film/DoctorStrange2016 the prime reality]]. Stephen becomes unable to accept her death and turns into a FallenHero, planning to perform a DangerousForbiddenTechnique to save her since [[YouCantFightFate her death is a fixed point in time]]. [[spoiler: Good news: [[BeCarefulWhatYouWishFor he does manage to save her]]! Bad news: the RealityBreakingParadox ends up creating a ''[[ApocalypseHow/ClassX4 Class X-4]]'' destruction of his universe! And it was AllForNothing anyway, as the reality erasure kills Christine ''again'', leaving Strange alone in a black void and [[MyGodWhatHaveIDone brought to tears over what he's done]].]]

* Lots-O'-Huggin' Bear from ''WesternAnimation/ToyStory3''. His owner Daisy loved him more than anything in the world, but he was inadvertently left behind by her on an outing. Determined to reunite with her, [[TheHomewardJourney he made his way homeward]], only to discover that he had been replaced by a new Lotso. Believing he had been deliberately spurned by Daisy, he becomes a twisted tyrant of the Sunnyside Daycare center and a G-rated [[StrawNihilist nihilist]].

* Lots-O'-Huggin' Bear from ''WesternAnimation/ToyStory3''. His owner Daisy loved him more than anything in the world, but he was inadvertently left behind by her on an outing. Upon [[TheHomewardJourney making his way homeward]], he discovered he had been replaced by a new Lotso. Believing he had been deliberately spurned by her, he becomes a twisted tyrant of the Sunnyside Daycare center and a G-rated [[StrawNihilist nihilist]].

* Lots-O'-Huggin' Bear from ''WesternAnimation/ToyStory3''. His owner Daisy loved him more than anything in the world, but he was inadvertently left behind by her on an outing. Upon [[TheHomewordJourney making his way homeword]], he discovered he had been replaced by a new Lotso. Believing he had been deliberately spurned by her, he becomes a twisted tyrant of the Sunnyside Daycare center and a G-rated [[StrawNihilist nihilist]].

* Lots-O'-Huggin' Bear from ''WesternAnimation/ToyStory3''. His owner Daisy loved him more than anything in the world, but he was inadvertently left behind by her on an outing. Upon [[TheHomewordJourney making his way homeword]], he discovered he had been replaced by a new Lots-O. Believing he had been deliberately spurned by her, he becomes a twisted tyrant of the Sunnyside Daycare center and a G-rated [[StrawNihilist nihilist]].
-->'''Chuckles the Clown:''' Something changed in Lots-O that day. Something ''snapped''.

* Lots-O'-Huggin' Bear from ''WesternAnimation/ToyStory3''. His owner Daisy loved him more than anything in the world, but he was inadvertently left behind by her on an outing. Upon making his way homeword, he discovered he had been replaced by a new Lots-O. Believing he had been deliberately spurned by her, he becomes a twisted tyrant of the Sunnyside Daycare center and a G-rated [[TheNihilist nihilist]].