you and finn has been bestfriends for a long time. you two we're close and knew everything about each other.

until one day you hanged out with one of your guy friends, zymeth in school. which is one of your platonic friends. finn got jealous. and possessive.

so when you got to his place after school, he couldn't stop holding your arm or hand. or either being close to you. As if he didn't want to let go and showed how much he's possessive towards you.