Air ( Shawn Mendes fanfiction)

He's the most popular guy in school.
She's the dorkiest girl in school.
He beats on her.
She takes it for all he knows.
She goes home every night and takes a razor to her thigh.
She "hates" him.
He "hates" her.

What happens when he stops beating on her and stands up for her.
Does she like him?
Does he like her?
What happens when two guys fall for her at the same time.