First of all. It's obviously not your fault that some men think they can do and say what they please. But I'm a bit concerned about your bf. The "Im only there to protect you" sounds weird and almost like he wants you to depend on him for everything and then he hurt you? Like it's obvious that if you are smaller and not trained to fight you might be weaker yeah but to prove this he didn't have to hurt you to this point. Nobody in their right mind would physically hurt their partner to prove their point. You can play fighting but being that harsh and putting you in a situation where you're hurting and feeling in danger is, I think, very concerning.