Best Epic Established Relationship Fanfics
Established Relationship fanfics over 100,000 words — the long-form treatment of the trope. Curated from AO3, ranked by kudos.
Top 17 Epic Established Relationship Fanfics
Ranked by AO3 kudos. Each fic is tagged with established relationship and falls in the over 100,000 words range.
Yuuei Survival Guide
by LowlyWriter
Izuku steps towards the other teen, holding his hand out to shake, “I’m Midoriya Izuku by the way. We haven’t officially met yet, right? I don’t remember seeing you at the Entrance Exam?”The blue-haired boy pauses, studies his hand uncertainly before shrugging. “Shirakumo Oboro,” he introduces in re
Two's Company (But they want a crowd)
by TossLotsofsauce
Finally, Zoey blurted it out, voice soft but sharp: “Have you ever thought of… something besides monogamy?” Mira’s thumb stilled on the screen. She looked up, slow. “…What?” Zoey’s hands twisted in her lap. “Like—not open relationships. Just… not just one person. Have you ever thought about being wi
Operation O Canada, or The Hollander-Rozanov Method of Soft Launching a Marriage
by robbinscinquefoil
“Can’t hang out tonight, Hayd. I have plans.” “Bullshit,” Hayden responds. “You never have plans.” Objectively, this used to be true. Nowadays Shane has many, many plans, between his nightly plans to look at Ilya’s penis through Skype and his various long-term plans laid out helpfully in his noteboo
The Seventh Sense
by MissDisoriental
It’s been over a year after the Fall and most people know Will’s in a relationship. They just don’t know exactly with who…A sequel to ‘The Shape of Me Will Always Be You’, but can be read as a standalone.Translation in 中文, Русский and EspañolFan videos available here and hereFan art master post avai
Draco Malfoy and the Truth of the Heart
by DracoWillHearAboutThis
Dumbledore, throughout his long, colourful life, had made a lot of dubious decisions, but the choice to send four emotionally constipated teenagers on a Horcrux hunt across the country to save the Wizarding World might have easily taken the cake. Or: The Camping Trip From Hell, and everything that f
AMP
by MizuTori
To smile, bring hope to the world.To bring hope to the world, make them smile.Their dreams. Different, yet so very much the same.No one was born equal into this world.Izuku was always reminded of that.Kyouka always reminded herself, whether she wanted to or not.But, differences weren't what mattered
The Formula 1 Fruit Vendors
by Flowersandthings
DanielOkay, @Liam. Welcome to the offical F1 chat. This is the real deal here. Top secret. More secret than the CIA. Basically, Checo and I are straight. No one else is. Liam Lawson stumbles across George Russell and Alex Albon making out in a club bathroom and messages Yuki Tsunoda about it... litt
Linked in Life and Love - Act IV: Menagerie of Mad Maidens
by l_OmegaInfinity_l
Taurus and Cinder have been captured, the White Fang in Vale have been disbanded... but not without cost.As Team RWBY work to recover from the wounds dealt by Adam Taurus, new problems continue to arise. Jacques Schnee becomes aware of his daughter's relationship, Salem's forces move to correct Cind
Whistle Song
by Chekhov
"It’s a beautiful day at the Soltryce Academy—the sky is vibrant and the trees rustle with the gentlest of winds as Caleb begins his impromptu Transmutation lecture outside. From the building on the edge of the grounds he hears a muffled bell tolling for fifth period. Somewhere in the distance, a st
seed of life
by jurassicmolasses
Shinji finds out the hard way that his boyfriend being part-Angel comes with some very unexpected side effects.
Kintsugi
by Caedmon
~Kintsugi - "to repair with gold"; the art of repairing pottery with gold or sliver lacquer and understanding that the piece is more beautiful for having been broken~The Doctor loved Rose recklessly and with abandon. It hadn’t started that way. He’d resisted and denied the way she made him feel, his
The (Mis)Adventures of Goat
by Hamliet
The members of Goat are still trying to figure out both what peace means, how human beings and ghouls can coexist, and where a certain rotten fruit has slunk away to, when life decides to surprise them. Touken, Akiramon, Ayahina, Mutsurie, Tsukikana, Nishikimi, Uihai, Seidou/Kurona, Nakimiza, and Ar
To Be Loved by You
by NoseyPepper
And that’s all it takes for Emily’s sobs to flood the room. The nurse lays Emily’s leg gently on the mattress and reaches for the tie at the front of her nursing gown as JJ leans Emily back against the bed. JJ sobs in unison with her wife as she watches the midwife lay a tiny, beautiful being betwee
The FIRE we chose
by killingthetime
Pon farr hits Spock hard and sudden.Jim promised he would be there—no matter how rough, how violent, how much it hurt.He keeps that promise.Every thrust, every bruise, every drop of blood is proof that Spock is alive and still his. ***Violence, sex and redemption***
Gate Building: See also, Bargaining with Archfey, Complications of
by thereafter
Over a decade after promising to build Artagan a doorway in exchange for the precious time they needed to defeat Vecna, the bill comes due. Percy and Vex find themselves pawns in the frequently exasperating, often conflicting, and sometimes exhilarating machinations of a number of archfey.
Cherished Canvas
by CelestialStarCandies
One year after the Rumbling, Pieck finds a power within seeking to guide her on a path of knowledge that could either make or break her.
Ill Gotten Aliases
by RuvenArt
After three months on Earth, the time has come for the Paladins of Voltron to return to space. The war effort must continue, and the threat Zarkon poses must be stopped. As all known laws of space and time begin to unravel around them, the paladins learn what they really are, and who they will die -
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About Established Relationship
Characters are already in a romantic relationship at the story's start. Focus is on maintaining, deepening, or navigating challenges within existing love.
Skipping the will-they-won't-they for deeper relationship exploration, seeing love in action, and mature relationship dynamics.
Common scenarios: Long-term couples facing challenges, married life, anniversary celebrations, working through problems together.
About This List
This list of 17epic Established Relationship fanfics spans 5,644,072 total words. Kudos range from 58 on the newest entries to 37,553 on the most established. 41% are marked complete — check the status flag before committing to a longfic. The most common rating is Explicit (9 of 17 fics).
Recurring tags across this list: Established Relationship · Alternate Universe - Canon Divergence · Canon Compliant · Fluff · Explicit Sexual Content.
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