Is boyfriend insecure or jealous?

Yes he is really insecure and you should break up with him. He is threatened by you and clearly thinks he is not good enough to be with you so he takes it out on you and tries to control you. He thinks it's awesome that your breasts are so big but at the same time it makes him scared that other people will think it's awesome and steal you from him. He sounds so, so, so insecure. Please DTMFA.