To me your boyfriend sounds very manipulative. For example saying its your choice whether you send pictures and then accusing you of not caring when you don't. You don't need someone like this in your life whether you're interested in someone else or not. I know how hard it can be to get away from someone who is manipulative, because although they are treating you badly they make you feel like you need them. You don't need him and you will be better off without him. I know it won't be easy, but you can leave him and cut all contact. If you need anyone to talk to about your situation or anything else feel free to
PM me.