Being touched

So I've been in abusive relationships. Mainly all of them. Well I have an amazing guy who happens to have a 2 year old boy. He loves just touching me in general not even in a sexual way most of the time. He gets so upset when I tell him to stop or if I kinda push him away from whatever he's touching. I tell him I don't mean to it's just a reaction because im used to the guys just wanting sex and hitting me. Idk how to make him understand im working on it and I really do love him touching me