Boyfriends Ex’s

My boyfriend of 6 months who loves me more than anything and would do anything for me has had quite a past. He has hooked up with 30+ girls, and received nudes from hundreds. I had never done anything before him, and now I have done everything. I am starting to realize that I wish I had know about them before I lost my virginity. He claims they mean nothing. He even hooked up with two after he met me but before we were together because he knew he wouldn’t be hooking up for a while. He has also received nudes from two hookups while we’ve been together. I see them in school and think about them constantly. I am constantly upset, angry, jealous, and sad. My boyfriend is upset that his past hurts me, but says that if I can’t get over it, he would rather have me be happy without him than upset with him. Do you have any advice?