Cheater Boyfriend?

mia

My boyfriend and I had a makeout sesh a week ago and we haven’t done anything since. I tried to ask him to prom by writing a poem and passing it to class but some other immature boys took it and read it. He got pissed af at me and now he won’t sit next to me in class. In addition to this, he keeps sitting next to this girl that he says he hates but I see them laughing together. Is he just over there antagonizing her or is he a cheater? Plz comment I feel so depressed by this and my mood disorder is acting up.