Looking for one I read a while back, can’t remember the title. Main M character is misogynistic, his mom is a prostitute I think. He’s a delinquent who doesn’t attend class. I think main F character is class rep or class pres. Their definitely classmates. Main M character agrees to go to class if he can have her however he wants. I think there’s a scene where they’re on the train and some classmates spot them out together and agree not to tell anyone they’re dating because it’s not allowed at their school. During the conversation he’s fingering her.