Mister bad boy and me

Ashton Irwin, the school's bad boy. According to the whole school he has tattoos. But nobody really knows because he's always wearing skinny jeans and his leather jacket. He is rude to everyone but a few. His grades are horrible, but they are never lower than a D. His best friends are Luke, Calum, and Michael and he sort of likes Calum's girlfriend.
Courtney Williams, the school's well nobody. Courtney is nice to everyone. Her grades are good they are nothing lower than a B. She works out like most people do. Courtney has dirty blonde hair and blue eyes. Courtney lives with her parents and sister Lily. Her best friend is Kaylin Paz.
What will happen when there patches cross?

(In this book Ashton doesn't have siblings)
(It is in 2016, it's easier for me)
(5sos isn't famous yet)