18

(Inspired by the song 18 by Anarbor)
A story where the main character turns eighteen but her parents still treat her like a little girl, so she dates a tough guy that she doesn't even like just to prove them wrong.
or
A story where Matt finds a girl who likes his tough personality, aka someone with whom he can hide his true sweet and sensitive self, even tho he knows she is just using him to look tough. Don't worry, that's alright with him.