Your FC is in the anti dimension.....

And they see Spider-girl and SharkFinn. Spider-girl has him wrapped up in webbing (they're like enemies)
SharkFinn: let go of me!
Spider-girl:ehhhh. Lemmie sleep on it....
SharkFinn:grrrrr. *baring his sharp teeth*
Spider-girl:oh shut it*webs his mouth shut*
SharkFinn:*muffled* makkkke mifff moff!
Spidergirl:what? *takes the webbing off*
SharkFinn:you know your really
Spidergirl:gets in his face* what? Because I can punch your lights out.
*breif moment where they gaze into eachothers eyes (well eyes of their masks)*
SharkFinn:oh what n-now you dont have anything to s-
Spidergirl: *connects a web to the webbing she trapped him in and kisses him*
SharkFinn:*gives in and kisses her*
*this goes on for a bit until they come to their scences*
Spider-girl:*slightly opens her eyes sees who shes kissing and....* OMG EWWW......I KISSED THE FISH I KISSED THE FISH! *runs off*
SharkFinn: HOW ABOUT ME! I JUST KISSED BUG-GIRL!
Now does your FC follow Spider-girl or stay with SharkFinn