pairing whore
a fan fiction freak who will hook up with anyone, boys, girls, even the dog, from the original story, no matter how silly it is.
Why is my main character dating the villain’s pet goat? That's not a real ship!
I'm writing a fic where Harry Potter and Voldemort are best friends. It makes sense.
If I can pair up Snape with Hermione, I can pair up anyone.