#polyr1

Bill Cipher/Fiddleford McGucket/Stanford Pines:

(Spoilers for Gravity Falls, Journal 3, and The Book of Bill)

It's just a very interesting dynamic. Fiddleford and Ford were college roommates, wink wink nudge nudge, and then live together in a secluded cabin that Fiddleford left his wife and young child to go live in because Ford simply asked for his help. They're best friends but there's a lot to suggest that at the MINIMUM, Fiddleford certainly has feelings for Ford. (Forgetting to get his wife a Christmas gift but making two for Ford, making Ford's name his password, etc.)

Bill and Ford are ambiguously canon. It's certainly up to interpretation how exactly you read their relationship but at the very least, it's blatant both of them loved each other. (Ford literally worshipping Bill for over a year, giving him full permission to possess him as he pleased, calling himself a Cipherholic, etc. Mabel telling Bill to go crush on somebody else's uncle, "one Sixer, please", "if lost return to Bill", etc.) Whether they ever voiced that to each other in a romantic sense, unclear.

And then there's Fiddleford and Bill. Fiddleford says he never met him, but he also wiped his own memory hundreds of times so he's not the most reliable narrator. Ford thinks he was hiding Bill's existence well, but as you can see in the attached image, he was NOT subtle about his worshipping, even letting himself be possessed in front of Fiddleford. Fiddleford's invention leads to Bill's death. They're both in love with the same man, and are both too emotionally constipated to do anything useful about it. Their potential interactions are a relatively untapped treasure trove of possibility.

Shen Qingqiu(Shen Yuan)/Luo Binghe/Liu Qingge:

Luo Binghe and Shen Qingqiu are married by the end of the series and have both been in sort-of courtships with Liu Qingge for years but they’re all such oblivious idiots that none of them realize this.

James Kirk/Spock/Leonard “Bones” McCoy:

They're extremely devoted to each other to the point of willing to die for each other. They're so mentally compatible that McCoy was able to hold Spock's katra and Spock and Kirk constantly mind meld.

A Triad that balances each other out, it could be argued that Spock is the brains, McCoy is the heart, and Kirk is the soul of the triad. They will fight to keep each other alive against all odds.

Scout/Soldier/Pyro/Demoman/Heavy/Engineer/Medic/Sniper/Spy:

First disclaimer: Because I am submitting 9 people, two of whom are related ([Spoilers] the Scout is the Spy’s son), and i don’t know how your rules work with polyamory other than “everyone is dating everyone else”, I want to clarify: this gets shipped in various ways (and i probably prefer some more convoluted version where everyone is in the polycule in some way but not everyone is dating everyone else), but i guess me submitting this means “everyone with everyone else except the incest”.

Second disclaimer, gender: Jane Doe is a guy. His name is Jane Doe but he is a guy. Nothing complex about his gender. Pyro, however, is of unknown gender. the canon description goes “he's a fearsome, inscrutable, on-fire Frankenstein of a man - if he even is a man”, and the character is commonly headcanoned to be  some sort of nonbinary, though they can really be interpreted as being of any gender. We don’t know anything about their perspective of their gender, but the game is often referred to as having an all male cast and so on. I don’t know man i just work here.

Steve Rogers/Peter Parker/James Buchanan "Bucky" Barnes:

Something about them caring for him and it evolving into a relationship

Kevin Day/Neil Josten/Andrew Minyard/Jean Moreau/Jeremy Knox:

Chi Cheng/Wu Suo Wei/Guo Chengyu/Jiang Xiao Shuai:

Can't I just submit the entire show here?

You see, there's 2 official couples in the show (CC and WSW // CY and JXS), but the relationships between the four of them are so entangled and messy and actually somehow poly coded is seriously insane. As the show progresses it gets stated just how much they all mean to each other. WSW and JXS are best friends, the type that teaches you How To Gay 101, jokingly flirts with you, offers you a place to stay and begs to be the first one by your side when any accident occurs to you; CC and CY are worsties, the type that will find a new partner just so they can tell you, quote, "don't forget to have s*x with my boyfriend", the one you share cigarettes with, the one you drunkenly kissed when you were younger and whom you admitted out loud was the most important person in your life. And the diagonals between them all? CY folds like a chair for SW and JXS finds CC attractive and viceversa. They're all genuinely so good together in a "I fear what would happen if anyone else was exposed to their radioactive swag". 10/10.

I now submit some posts for more details™ 

If there ever was a frenemies to lovers polycule in a live action series then it would be in Revenged Love. (but the toxic in the ship name is a content warning, they are all a bit morally grey. which is a feature not a bug. but they balance each other out)

mild spoilers ahead, but most of it is general known synopsis of the plot:

It is a complicated mix and development through 24 episodes of scheming, revenge, misunderstandings, insane plans, unforeseen feelings, support, love and friendship: Suo Wei meets the doctor Shuai who helps him back up on his feet after a heavy breakup. Suo Wei then finds out his mean ex girlfriend dates the playboy Chi Cheng now. Suo Wei and Suah come up with the ridiculous revenge plan that Suo Wei seduces Chi Cheng into breaking up with her and dating him instead (they found out that he also dated men in the past). The plan works to a point. But it wouldn't be fun if everything would go smoothly till the end :) Then there is also Chi Chengs very close childhood worstie, Chengyu, who gets openly interested in Shuai. But these two have a thing going where Chi Cheng has to sleep with every guy Chengyu is interested in. Oh yes and there are also snakes (real). Snake breeding and snake fights (cgi). Did I mention that it's complicated? But they all end up loving and supporting each other!

(fr)enemies to lovers, besties who study gay sex and seduction together, worsties who kiss and kind of share boyfriends, friends who try to get each other hooked up. Everyone flirts with everyone. Most of them are attracted to more than just one in the group. They love watching the others kiss or even having s*x. 

How it started:

How it ended:

besties/worsties who love each other:

Neil Josten/Andrew Minyard/Kevin Day:

Alhaitham/Kaveh/Tighnari/Cyno:

They have such a fun dynamic together... Sumeru really is peak

Dean Winchester/Sam Winchester/Castiel:

Buggy/Sir Crocodile/Dracule Mihawk:

[SPOILERS] for the end of Wano arc

Crocodile and Mihawk (two bad bitches) getting pulled into shenanigans by Buggy (literally a clown), not the ship we expected but what we needed.

Kohaku Oukawa/Hiiro Amagi/Aira Shiratori:

Stanford Pines/Fiddleford McGucket/Stanley Pines:

Old man yaoi

Peter Parker/Eddie Brock/Venom (Marvel Comics):

First in web of spiderman after the symbiote connected and was then divided from peter it is stated explicitly that Peter inadvertently taught him human emotion, including love.

The symbiote has been rewritten and retconned so much the only consistent character trait it has is romantic love

... im reading this bar for bar from a reddit post so I gotta just copy this. i dont even believe it myself: “Venom's early arcs as a Spider-Man villain: Peter getting tired of being chased by Venom, decided to find ways to stop them and ask a literal psychologist for help by explaining the symbiote's behavior. The psychologist tells Peter that the symbiote is in LOVE with peter, straight up from a psychologist's mouth who was only introduced for this purpose. Peter then decided to strip himself and seduce the symbiote so it could leave Eddie and lead it to a trap, turns out that the symbiote is still love-struck for Peter but it's unable to leave Eddie so the symbiote falls into an emotional and physical shock.”

Venom The Hunger: Entirely on your face. The story starts with Eddie saying that the symbiote makes him feel things that no girlfriend ever could while showing panels of the symbiote forming a hand and Eddie holding it.

From this post: https://www.reddit.com/r/CharacterRant/comments/lcrr0m/the_venom_symbiote_has_canonically_expressed/

There's even more that president: Venom the Madness: Eddie meets a woman and start making out, while that happens, a tendril of the symbiote grab the woman's hand, and then Eddie explains that he and the symbiote got excited together, later on, the symbiote told him "you got a girl without my permission? Good I like her too", which practically suggests a poly relationship. This might or might not be the first time the symbiote spoke with words. The rest of the story gets horny in a bad way, I don't recommend it.

Zagreus/Patroclus/Achilles:

NO PROPAGANDA PROVIDED

Small Mike/Cowboy Hat Mike/Cat Mike: