Head Over Heels For Hemmings

I'm Kathy Hood Calum's little sister.He is overprotective about me.I work as a baker part time and go to school for the remaining time.Calum doesn't approve of me getting a boyfriend because of the incident that happened with my 1st boyfriend.Calum works as a singer in a band called 5sos.I love my brother but I think he's too protective.What will happen when Kathy falls for Luke?