History Main / YourUniverseOrMine

** The comic had a straight example with Hawkeye, in an AlternateHistory, ditching his universe to be with Black Canary (a ShoutOut to the way Canary herself switched Earths in UsefulNotes/{{the Bronze Age|OfComicBooks}}, although she did that because she had lost, rather than gained, a lover).

* ''Film/PrinceCaspian'' adds romantic tension between Caspian and Susan, who are from different worlds, but have no romance at all in [[Literature/PrinceCaspain the original books]]. Interestingly, the Pevensie siblings never married in all the years they ruled Narnia, despite all but forgetting they came from another world and despite ''Literature/TheLionTheWitchAndTheWardrobe'' mentioning Susan and Lucy having many, many suitors (but the only one we ever meet personally is a haughty evil prince in ''Literature/TheHorseAndHisBoy'').

* The Manga/FushigiYuugi video games, just like the original source, play with this trope. In ''Genbu Kaiden: Kagami no Miko'' Mariko [[spoiler: cannot stay with any guy from the Book she falls for, and the ony love interest who can stay with her is her Japanese friend Takumi]]. In ''Suzaku Ibun'', Madoka [[spoiler: more often than not has to return to Japan as well, but two special endings can be unlocked if she has enough love points - in one her beau will be reincarnated in Japan and live with her, in another she will be able to stay in the ''Universe of the Four Gods'' with him.]]

* In ''Literature/TheFamiliarOfZero'' Saito is summoned by Louise to alternate world. If not for the implication that one can return to Earth by flying toward a eclipse there would be no choice possible to make it this trope.

* In the ''Literature/HaruhiSuzumiya'' [[TheMovie movie]] (and fourth LightNovel), [[spoiler:Nagato's attraction to Kyon]] causes her to ''create'' an alternate universe [[spoiler:(technically, she just modifies the existing one)]] in which, unlike in the old universe, it is possible for them to become a couple. She leaves the "which universe?" decision to [[spoiler:Kyon, who decides to reset the world to its original state, partly due to his [[BelligerentSexualTension self-denied feelings for Haruhi]]. But the other option [[Manga/TheDisappearanceOfNagatoYukiChan is not ignored]]]].

* Toyed with and ultimately discarded for the ''ComicBook/MarvelVersusDC'' crossover (the big one that led to the ''ComicBook/AmalgamUniverse''), where Jubilee and Tim Drake (Robin) struck up a rather sweet mini-romance that made them having to fight each other rather difficult.

* This was the main tension in the relationship between ComicBook/DoctorStrange and Clea. He was Sorcerer Supreme of his dimension and she was a member of the royal house in hers -- they never did find a way to solve the problem and eventually separated to their own worlds.

'''Clea:''' I know, Stephen. But it’s the commute, isn’t it?

* ''Film/SomewhereInTime'' hinges on this. [[spoiler: The reply is being TogetherInDeath.]]
* ''Film/KateAndLeopold'' depends on this as well: Leopold, a Victorian Duke, travels forward in time from 1876 to 2001 and falls in love with modern woman Kate. However, if Leopold doesn't return to his own time when the temporal portal re-opens, history will be altered and any impact Leopold would have had on history (including all of his descendents and the invention of the elevator) will cease to exist. [[spoiler:He ends up going back, and Kate chooses to join him in his time rather than remain in the present.]]

* TheFilmOfTheBook of ''Film/PrinceCaspian'' adds romantic tension between Caspian and Susan, who are from different worlds, but have no romance at all in the original books. Interestingly, the Pevensie siblings never married in all the years they ruled Narnia, despite all but forgetting they came from another world and despite ''The Lion, the Witch, and the Wardrobe'' mentioning Susan and Lucy having many, many suitors (but the only one we ever meet personally is a [[BreakTheHaughty haughty]], [[TheEvilPrince evil prince]]).

* There is a short, but deep, version of this in the original ''Film/TheTerminator''. The time machine is only one way though, so it's not like the guy had much of a choice after he arrived [[spoiler:and he dies anyway]].

* In Creator/AlanDeanFoster's ''The Time of the Transferrance'', Literature/{{Spellsinger}} Jon-Tom must choose between returning to our world and remaining in the warmlands, where his wife, friends, and magical abilities are.
* An issue for Lyra and Will in ''Literature/HisDarkMaterials'': as one can't live in the universe of another for long and [[spoiler: the doorways all have to be sealed.]]
* In Nora Roberts' ''Circle'' trilogy, each set of lovers is either from a drastically different period of time from each other, or from two different worlds.

* Tommy [[IChooseToStay chooses]] to stay with (or, more accurately, return to) his [[OneTrueLove true love]] Fiona at the end of ''Theatre/{{Brigadoon}}''.

* ''VideoGame/BackToTheFutureTheGame'', due to some other time-related shenanigans, [[spoiler:Doc is left in charge of his father's estate (he wasn't in the "older" timelines) and, thus, the Browns take partial residence in Doc's house in the 1980s.]]

* Iron Man when placed opposite of any female, humanoid character in ''VideoGame/MarvelVsCapcom3''. This ranges from Crimson Viper to Tron Bonne to [[ChineseVampire Hsien-Ko]] to [[SuccubiAndIncubi Morrigan]]. The only exception? Amaterasu, who is a ''dog.''

** In ''The Game'', due to some other time-related shenanigans, [[spoiler:Doc is left in charge of his father's estate (he wasn't in the "older" timelines) and, thus, the Browns take partial residence in Doc's house in the 1980s.]]

** She seemed to have chosen to go to the future primarily to be with the whales rather than Kirk.

** [[spoiler: Actually, one door can be left open, but Lyra and Will choose to stay apart so that the door opened in the world of the dead--so that the ghosts can disintegrate into the rest of the universe instead of just existing for the rest of eternity--can stay open.]]

* In Creator/BarbaraHambly's ''Literature/TheWindroseChronicles'', [[spoiler:Antryg Windrose, wizard,]] ends up [[spoiler:fleeing an order of execution in]] the Empire of Ferryth, and crossing the Void to stay with [[spoiler:his lover, Joanna Sherton,]] in 1980s Los Angeles. [[spoiler:He quickly finds work as a bartender and fortune teller, despite not thinking to omit 'wizard' from his resume.]]
** This turns out to be something of a problem, because Earth has no magic. The implications of [[spoiler:a very powerful mage]] living in a magicless world are further explored in ''Dog Wizard'' and the short story ''Firemaggot''.
** The magic situation becomes even more of a problem at the end of ''Dog Wizard'', when it's revealed that [[spoiler:the Master-Spells have fallen to Antryg, making him Archmage of the Council of Wizards back in Ferryth.]]

* ''{{Series/Fringe}}'' plays with it a bit in the second season finale. [[spoiler: Olivia kisses Peter to convince him to return to her universe from the one he is originally from, and seemingly succeeds. However, she is then replaced by her [[EvilTwin alternate universe counterpart]], who [[TheMole goes back with Peter and Walter to spy on them]], while our Olivia is imprisoned and tortured.]]
** [[spoiler: Generally subverted as the series progresses and the alt-Olivia situation is resolved. Peter had spent most of his life thinking that he's from our side anyways, so neither seems to particularly care that they're technically from different universes.]]

** Also slightly subverted in ''Series/AshesToAshes2008'' it isn't really much of a choice for Alex; she wants Gene, but wants to go home to her daughter more [[spoiler: however she realises this is impossible when she discovers she is in fact dead. So she chooses to stay with Gene, but then that's thrown out the window too as he insists she [[IWantMyBelovedToBeHappy goes to heaven instead]].]]

** That wasn't really about the feelings they had for each other, more that Yar knew she was probably dead in the original timeline, and her best chance of survival was actually to go with them.

* In ''VideoGame/StarOceanTheSecondStory'', some of the recruitable heroes weren't born on Expel, coming from other planets and space-faring cultures. Depending on your RelationshipValues, this [[MultipleEndings can lead to]] one side of a given pairing choosing to stay on Expel to be with their loved one, or the other member deciding to accompany them into space, leaving behind their old life in the process.
** Same in the third installment: Fayt can stay on Elicoor with Albel or Nel, travel to Klaus with Cliff or Mirage, or head off to some as-yet-unknown place with Maria.

** Not voluntarily. Both their home universes are doomed.

* Doc Brown and Clara Clayton in ''Film/BackToTheFuturePartIII'' have something like this, but the fact that Clara was supposed to have died (and survived only through Doc's [[JustForPun timely]] intervention) may help simplify matters. In the end they seem to choose option C. Live sort of outside of time traveling through the past and future with their flying train.

* An issue for Lyra and Will in ''Literature/HisDarkMaterials'', though subverted as one can't live in the universe of another for long and [[spoiler: the doorways all have to be sealed.]]

* In ''LightNovel/TheFamiliarOfZero'' Saito is summoned by Louise to alternate world. If not for the implication that one can return to Earth by flying toward a eclipse there would be no choice possible to make it this trope.

* In the ''LightNovel/HaruhiSuzumiya'' [[TheMovie movie]] (and fourth LightNovel), [[spoiler:Nagato's attraction to Kyon]] causes her to ''create'' an alternate universe [[spoiler:(technically, she just modifies the existing one)]] in which, unlike in the old universe, it is possible for them to become a couple. She leaves the "which universe?" decision to [[spoiler:Kyon, who decides to reset the world to its original state, partly due to his [[BelligerentSexualTension self-denied feelings for Haruhi]]. But the other option [[Manga/TheDisappearanceOfNagatoYukiChan is not ignored]]]].

* Brunhilda in ''Webcomic/TheKAMics'' is dating Bobby (Life) from ''Webcomic/LifeAndDeath''.
* Dark Eyes from ''Webcomic/MagicalMisfits'' got pregnant by Brian from ''Webcomic/PrismaticVodka''.

* Happens in the second ''WesternAnimation/{{Jimmy Neutron}}''/''WesternAnimation/TheFairlyOddParents'' crossover entitled "Jimmy Timmy Power Hour 2: When Nerds Collide". The obvious solution, since both shows run off the [[RuleOfFunny Twin]] [[RuleOfCool Rules]], is to throw an interdimensional dance party.

** Both Fluttershy and Rarity end up falling in love with [[ScrewYourself their male counterparts]] (Butterscotch and Elusive, respectively). Meanwhile, Applejack and Rainbow Dash seem to be sweet on each other's male counterparts, Rainbow Blitz and [[NamesTheSame Applejack]]. There's also a hint of this with Celestia and her RuleSixtyThree-universe counterpart, Prince Solaris, at the end.

* Iron Man when placed opposite of any female, humanoid character in ''VideoGame/MarvelVsCapcom3''. This ranges from Crimson Viper to Tron Bonne to [[ChineseVampire Hsien-Ko]] to [[HornyDevil Morrigan]]. The only exception? Amaterasu, who is a ''dog.''

* ''ComicBook/{{Vampirella}}'': The last Warren issue has a Multiverse traveler falling in love with the protagonist. When things go haywire, he tries the next universe. [[note]] Bonus {{Squick}}: Selfsame traveler had been much later retconned to be the biblical Cain by Harris. And much later Cain has been retconned to be Vampirella's father by Dynamite. [[IncestIsRelative Maybe they should do the research next time...]][[/note]]

* This occurs in the ''ComicBook/{{Runaways}}''. The kids accidentally end up in 1907. Victor falls in love with a girl and invites her to come back with them. [[spoiler: She refuses because she's too scared to leave her own time.]]

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%%* Happens at the end of ''Theatre/{{Brigadoon}}''.
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* Iron Man when placed opposite of any female, humanoid character in ''VideoGame/MarvelVsCapcom3''. This ranges from Crimson Viper to [[JailBait Tron Bonne]] to [[ChineseVampire Hsien-Ko]] to [[HornyDevil Morrigan]]. The only exception? Amaterasu, who is a ''dog.''

* IronMan when placed opposite of any female, humanoid character in ''VideoGame/MarvelVsCapcom3''. This ranges from Crimson Viper to [[JailBait Tron Bonne]] to [[ChineseVampire Hsien-Ko]] to [[HornyDevil Morrigan]]. The only exception? Amaterasu, who is a ''dog.''

* In ''Princes Nevermore'' by Dian Curtis Regan, Princess Quinn finds herself in the Human world- and there falls in love with a human boy. however, she is informed that [[spoiler: she will not age like he will, and she only has three days to decide if she should go home]] in the end, she[[spoiler: returns home, but she hopes one day to see him again, and he tells her he loves her]]

* In ''The Secret of the Unicorn Queen'', Sheila and Darian try to tell each other how they feel, but [[spoiler: She is returned to earth before they can say anything]] Later, When they are reunited, Sheila must decide if she can go back to her ordinary life, or if she should stay with him. she choses to [[spoiler: return home]] but[[spoiler: discovers she can SPEAK with him mind to mind!]]
* In the ''Franchise/StarTrekExpandedUniverse'' novel ''Stargazer: Three'', Andreas Nikolas is secretly infatuated with the Asmund twins. Unfortunately, Gerda and Idun were [[RaisedByNatives raised by Klingons]] (also, one of them is already in a relationship). The ''Stargazer'''s transporter then deposits an alternate universe counterpart to the twins named Gerda Idun Asmund on the ship. Unlike her duplicates, she was raised by humans and is much more friendly. He instantly falls for her, and she returns his affections. Unfortunately, she is an agent from the MirrorUniverse, send to steal the ship's chief engineer as a last-ditch effort to save the [[TheEmpire Terran Empire]] from TheAlliance. When her subterfuge is discovered, she tells Nikolas that, in her universe, they were lovers until he was killed in battle. He lets her return to her universe but wants to join her. She leaves alone but breaks down into tears on the other side. The next novel shows that this has had a tremendous impact on Nikolas and he eventually resigns.
* In Creator/BarbaraHambly's ''Literature/TheWindroseChronicles'', [[spoiler:Antryg Windrose, wizard,]] ends up [[spoiler:fleeing an order of execution in]] the Empire of Ferryth, and crossing the Void to stay with [[spoiler:his lover, Joanna Sherton,]] in 1980s Los Angelos. [[spoiler:He quickly finds work as a bartender and fortune teller, despite not thinking to omit 'wizard' from his resume.]]

* ''ComicBook/LegionOfSuperHeroes'' has ComicBook/{{Brainiac}} 5 and ComicBook/{{Supergirl}}, who were in love but were born and lived in different millennia. Ultimately, their relationship cannot progress because neither of them can move out of their own century permanently. Notheless, in some elseworlds like ''ComicBook/KingdomCome'', Kara moves to the 31st Century and she and Querl have [[https://dc.fandom.com/wiki/Brainiac%27s_Daughter_(Earth-22) a daughter]].