Confronting An Ex

I hate him for all that he did to me in college. I have lost track of the amount of time, money and energy I spent for him and his friends. And for him it was all over in just a few words “I want to break up with you” that’s it. I hate him for all that he did to me and I would really like to slap him for what all he did to me. For hurting me physically, mentally and spiritually. I would like to tell him all these things.