"(NSFW)" My boyfriend gets angry when I don't want to be intimate?

My bf is always angry when I say I don’t want sex. He gets really annoyed and says mean stuffs like, “I would go get it elsewhere”, or “why do we live together if you refuse to have sex”, “you want me to get you things but you can’t give me what I want ”. I love him so much, when he says those stuffs I sometimes tell him to go ahead and have sex with someone else, but deep down in my mind i don’t want him to. I just don’t get turned on, and whenever I do he always teases about my screams, orgasms, how good the sex was, etc. And most times I feel pain in my vagina, so the thought of having sex is scary. I usually offer to give him a bj, sometimes he agrees other times he says he wants the full package or nothing. I don’t know what to do. How do I make him understand? Please I need answers asap. Thanks