Relationship advice

Currently my bf keeps accusing me of cheating and always saying slick stuff about other women. I got tired of it and began saying slick stuff back to him. All of a sudden he keeps getting triggered about me cheating and saying I am while proceeding to break up with me all the time he got mad at me because I wouldn’t let him touch him and I got tired of him breaking up with me on and off and he doesn’t respect boundaries bc I have s.a trauma I don’t like when men touch my butt he still continues to do it after I told him to stop. He has also lied about his female friend he said there jus friend and she proceeds to tell me how they’ve talked and he tells me later that she has seen her ass !