So over the school holidays (From New Zealand btw) by ex-girlfriend had a bunch of problems and we ended up breaking up. We had time to heal so things shouldn't be awkward at school. We have the same friend group, so for the sake of others, I thought id be mature and get along with her. She has decided to be a bitch. She is constantly ignoring me and giving me glares. Today in class, I asked her a genuine question about the work and she shrugged and ignored me. And today when the friend group were giving each other shit today, I made a funny comment about her hair after she said something to me, and she got mad and called me a prick. What the fuck do I do? I'm dealing with a child here. I don't want to lose my friends but she is making my school experience horrible (We are both 17 btw)