I want help with forgiving :/

Hi guys! So this may be a lil long but here goes. When I was pregnant I found screenshots of other girls on my boyfriends laptop. Tons of them. From Insta models to people he actually knows. It made me so upset to see them... I began to hate my body. I hated how fat I was and how I wasn’t good enough for him to look at me like that. I talked to him about it and he said he’d stop and a few days later I found more. They had been hidden and were taking the SAME day that we had talked about it and he had said he wouldn’t do it anymore. I texted him and asked him if he still hadn’t done and he said he hadn’t and I said I’m literally looking at them. It hurt so bad for him to lie to me like that. Fats forward a few weeks later after I had had our son. So we were scrolling through his photos and he went over too far and there was ANOTHER SCREENSHOT! I looked at him and asked him are you serious and he said yeah. I told him if I ever found more we would be done. So after that, instead of screenshotting he would just save them on insta and he ever had a Album on there called “ sexy bods”. I again was upset and although he hadn’t screenshotted anything I still felt it was the same thing. And it hurt. I felt lied to, and that I wasn’t good enough. That I was too fat. Literally 3 days after I had my son he went to a Mardi Gras parade and had videos of another girl flashing her boobs for beads. So we talked about him saving the pics and he agreed to not do it. Fast forward a few months later, he was sitting outside on the porch and I was about to walk outside but then I noticed him going through some girls profile pics and like really really looking at them. And again it hurt a lot. Again I felt ugly, fat, and just not good enough for him. We argued and he apologized and heading done it since. I have forgiven all of this. But I need to move on from it if I want this to work. I just don’t know how. I don’t trust him, and he’s made me loathe myself to the point that I hate on other girls that look better than me and I know that it’s not their fault and I feel so bad after I have those thoughts. What would you guys do? It’s really been weighing heavy on me... I really need some help w this.

Thank you so much if you read this far please please give some advice.

( I shared this w a girl group on Facebook and they were saying just leave etc and I really don’t want to. He’s actually listening to me and trying to better himself for our relationship and he doesn’t do these things anymore. I just need help with ways to forgive and learning to trust again...)

Thanks y’all ❤️