Not sexually attracted to boyfriend

I had been in a 6 year on and off again relationship with my ex who I was really in love with. He hurt me so many times and cheated on me and lied to me so many times that I ended it finally about 2 months ago. He found a girlfriend and all the things I fought with him about he does for his new girlfriend with no problem. For example, he wouldnt let me comment on his photos and he wouldn’t post pictures of us together but now his new girlfriend he does all of those things now. It hurt me so bad seeing how he treated her better than me so I went and decided to give someone else a chance. My new boyfriend is super sweet loyal and will do anything for me. Only problem is that I’m not sexually attractive to him. He’s less experienced but everytime he touches me or whenever we have sex I literally hate it so much. I feel gross and uncomfortable. Even when we kiss I get disgusted. I don’t know if maybe with time I’ll grow to like him but I’m hoping I do he has all the qualities I wanted but when it comes to being intimate I cringe and try to avoid it at all cost. I just don’t know what to do.