Ex and closure

So I lost my virginity to my ex, not because I wanted to. I just feel like I never got closure when I dumped him. He was a terrible person and although I don’t expect him to apologize I want him to know how he made me feel, how things he’s done to be affected my life more than he may realize and that for someone who claimed and claims to be a “great guy” really doesn’t act that way towards someone he claims to love. I feel like he should know how badly he hurt me and destroyed me at the time.

The thing is, should I feel like this? Do I have a right to tell him any of this? I haven’t spoken to him since I dumped him, I don’t miss him or anything like that and I never want to get back with him. I just feel like I never got closure.

Would telling him all this even help? If it’s not worth it, or if it could just open the door to a terrible conversation, how do I get over this feeling?