breakup

we broke up a while ago. but recently he got with a new girl. and does everything he didnt do with me. like actually him trying in that relationship. he told me he was cheating on me the whole time we were together. three years. and he did it to hurt me. he told me that he knows me and that he knows that would hurt me. and then proceeded to attack my body image. and how our sex was. how tf do i get over him bc right now i dont feel comfortable with my body or mind right now.