Love Transcends Spacetime

In some stories, a Flash Sideways - or even outright Time Travel - can be caused by The Power of Love. Not just motivated by it. CAUSED by it.

So strong is their love that no boundaries are capable of keeping these lovers apart. Not even the boundaries of space, time, fourdimensional spacetime, or even The Barrier between different universes.

Not limited to Time Travel and timelines, the trope also applies to certain cases of targeted reincarnation, long-range telepathy et cetera.

Contrast Star-Crossed Lovers. See also Time Travel Romance.

Anime and Manga
""I am here.""
 * The first Inuyasha movie had the subtitle Toki wo Koeru Omoi / Affections Touching Across Time, which referred to a scene where Kagome (in the present) and Inuyasha (in the past) both touch the goshinboku tree and then can communicate telepathically. (They did this because the Bone-Eaters' Well was out of order.)
 * The ending of the series proper features
 * Gurren Lagann: By the second part of the series, . Love is, of course, far from the only thing in the setting that transcends spacetime.
 * In Voices of a Distant Star, junior-high sweethearts Mikako and Noboru are separated when Mikako is selected as a Humongous Mecha pilot and sent with the fleet into space. As the fleet does not have FTL communications technology, the only means of contact the two have is email, with increasingly long delays in transmission - first six months, then a year, until finally Mikako ends up eight and a half lightyears from Earth. The anime does some deconstructing as both Mikako and Noboru struggle to cope with the separation - Noboru at one point even making up his mind to give up on Mikako, saying that "a distance that takes eight years at the speed of light is no different than saying 'forever'," - but ultimately plays the trope straight in its final scenes.


 * In the The Book of Bantorra, Colio Tonies falls in love with the centuries-dead "Ever-Laughing Witch" Shiron Byacornaise when he reads her "book" (in this series, a stone tablet in which the memories of a person's lifetime crystallize upon their death) and finds that she had visions of him loving her in the future.
 * And episode of Pokémon had May and Meowth hurled back in time for no discernible reason but to get a couple to hook up. This was before Dialga was introduced to the canon.

Comics

 * One old storyline in X-Men is that Professor X had a long distance relationship with the empress of another galaxy. Having never even visited each other's galaxies before, their minds nontheless touched telepathically by the virtue of being soulmates.
 * Golden Age Hawkman and Hawkgirl.
 * The various Flashes use their loved ones as an emotional tether to avoid bouncing uncontrollably through time or being absorbed by the Speed Force their powers draw upon.
 * In City of Dreams, the prince and the queens appear to be visitors in the waking world, coming there only for the protagonist.

Film

 * Played straight in Just Like Heaven. The main character David sees a ghost Elizabeth, who believes she still lives in her old apartment. Over the course of the movie, they genuinely start to love each other, when he finds out . He races to prevent, and succeeds. Once this happens, their love transcends
 * In Sliding Doors, the main character finds her true love in one of the timelines.
 * In the movie Made In Heaven, when Annie incarnates for the first time (leaving Heaven in the process), Elmo reincarnates to be with her even though Emmett (a stand-in for God) warns him that they only have 30 years to meet. The searching is the basis for the entire movie. Eventually,.
 * There's The Fountain, where a couple are seemingly re-incarnated and fall in love again and again.
 * Dead Again, where The Boy and The Girl are reincarnations of a previous pair of lovers.
 * In Somewhere in Time, the protagonist wills himself to teleport backwards in time so he can be with his true love.
 * The film For All Time - based off the classic Twilight Zone episode "A Stop At Willoughby" - heavily implies that this is what keeps pulling the protagonist back into the past. (Incidentally, the lovers are played by Mark Harmon and Mary McDonnell.)
 * In Happy Accidents, time travel itself is done via technology, but the protagonist says that the past can only be changed through an extreme amount of emotional energy. This leads him to think that he can save the life of a woman who's photograph he fell in love with in the future.
 * At the end of Daywatch  uses the chalk of fate to alter something he did   As a result he never met or fell in love with  As he passes her on a walk through the park, Zavulon and Gesser argue over whether or not he will recognize her.
 * In Star Trek: Insurrection, Picard's girlfriend can slow down time, but only when doing so makes it really really romantic.

Music Videos

 * The ending of Take on Me.

Literature

 * Near the end of E. E. "Doc" Smith's last Lensman novel Children of the Lens, Kimball Kinnison is thrown outside the space-time continuum. His wife Clarrissa, his children and Mentor of Arisia use the Power of Love to find him and bring him back.
 * To be fair, its the Power of Love that finds him, but bringing him back is a simple dimensional science exercise for Mentor -- once he finally has a target fix. The problem of finding one specific human being who could potentially be at any random point in the entire multiverse, however, was unsolvable by any power known to the Arisians.
 * The Time Traveler's Wife
 * Played with in the short story "Bad Timing". A man from the future reads a story in an old magazine about a woman who falls in love with a time traveler, who traveled to her time because he read a story she wrote about him. The man in the story is obviously him, and he sees a picture of the author and falls in love, so he steals an experimental time machine and goes to find her in the past. However, he doesn't have all of the manual for the time machine, and instead of creating the expected Stable Time Loop, he keeps arriving at all the wrong parts of her life—like when she's five years old... or when she's about to die... or just after she's married someone else...
 * In the Wheel of Time, Rand is the reincarnation of Lews Therin Telamon. One of his love interests, Elayne, is heavily implied to be the reincarnation of Illena, Lews Therin's wife. Birgitte and Gaidal Cain also meet and fall in love every time they are reincarnated.
 * In the Dragonriders of Pern novel Dragonquest, Brekke's love for F'nor is apparently enough to telepathically reach out to the Red Star and cause Canth to teleport them home, despite being unconscious at the time. Although there is occasional mention of "empathy," no human character in the series had ever evidenced the ability to telepathically communicate across interplanetary distances before (or after).
 * Mercedes Lackey's By the Sword plays with the trope a bit with Kerowyn and Eldan - the beginning of the last third of the book shows that Kero has had recurring dreams about Eldan over the ten years since they met, fell in love, and parted. Only when they are reunited some chapters later does Kero discover that the dreams were not just dreams: the two of them were communicating telepathically the whole time, from completely different countries, a fact that gives her a considerable shock when she realizes it. (Eldan, who'd already figured it out, is rather sheepish.)
 * This is actually a known power in the setting -- the 'lifebond', which can potentially be formed between two powerful psychics or mages (or between a mage and a psychic), binds their souls together on a level deep enough to transcend death . By comparision, sustaining a mindlink across hundreds of miles of distance (when the normal range of Mindspeech is measured in hundreds of feet) is relatively trivial.

Live Action TV

 * Lost: Desmond has a history of mental time-travel in which his girlfriend Penny serves as his Constant (also Trope Namer): his first time-traveling experience is at least partially triggered by him proclaiming his life to her, his second one is stopped when he makes contact with her in both time periods. It Makes Sense in Context and is much Better Than It Sounds.
 * And then later the Flash Sideways allows all principal characters to reunite with their love interest regardless of the mistakes they made in the original timeline.
 * In Doctor Who Series 5, Amy's love brings back, first Rory, then her Parents, and finally the Doctor himself from nonexistence.
 * Furthermore, the romance between the Doctor and River Song, besides the two of them having perhaps the most convoluted romance in existence. How convoluted?  It seems to be working out pretty well, all things considered.
 * Lois and Clark had an episode where it was revealed they were lovers in past lives and that Tempus's lives in those times hated Clark as much as the mainstream Tempus hates Clark/Superman.
 * Originally, Lex Luthor would be that episode's villain, but the actor who portrayed him in that series wasn't available when they filmed the episode.
 * Babylon 5: The canon novel To Dream in the City of Sorrows implies that Catherine Sakai, pulled through the time rift, finds Valen (aka her love ) in the past, and that the power of their love had something to do with it.
 * Fringe has Peter and Olivia. They cross universes, rewrite time lines and change the future.
 * And now as of episode 4x20, we have  Fringe runs on this trope.

Plays

 * The end of Brigadoon. Tommy turned down joining Brigadoon, but magically gets let in anyway 4 months later.

Tabletop Games

 * In Kult, passion can be strong enough to make people even return from the dead, and this trope is even less a problem. This troper has the theory that passion is so strong in this universe that it can beat everything else.

Video Games

 * Sakura Wars: So Long My Love. A flashback reveals that 500 years ago, a previous incarnation of the main character battled the Demon Lord Oda Nobunaga along with several comrades, and one mysterious foreign nun. They fall in love, but she has to perform a Heroic Sacrifice in order to seal the Demon Lord. Before she dies, she assures him that their souls will find their way together again someday. Whichever of the 5 main girls you choose at the end of the game turns out to be a reincarnation of said nun.
 * In Kingdom Hearts, Beast was able to travel to Hollow Bastion to save Belle by sheer willpower.

Visual Novels

 * Fate/stay night gives us Saber and Shirou (at least in the Realta Nua version), who manage to fullfil the Star-Crossed Lovers prophecy of Merlin (Shirou must forever search for Saber, and Saber must forever wait for Shirou) and reunite in Avalon.
 * Nine Hours Nine Persons Nine Doors has this as its' main premise:

Web Comics

 * In The Dreamer, Alan and Beatrice have a rather complicated relationship, to say the least. Bea can only see Alan in her dreams.
 * In Gunnerkrigg Court, it turns out that 's powers work like this.