Have you been able to forgive your S/o for cheating //lies

I’m going to try to make this short, I’m currently in a relationship with someone I dated back when we were 13/14 years old. Currently 24 now. We had been on and off for a few years, even went a few without talking to each other. We have two kids together now. Last year we moved in together and about a month in I found out about all the lies he had told me. We didn’t have a title but we both made it clear that we weren’t having sex / dating other people. In august I found out that he had been having sex with a TON of people and even made two girls believe that they were in a relationship as well. While all that time he claimed he was only with me. He was having unprotected sex with me and a few girls from the bunch. Some girls I knew and some was off dating websites he would use to have sex. He had also given me chlamydia so when I found out it all made sense. I got pregnant with baby #2 and he was still doing things that broken my boundaries, but the worst thing was searching up massage places with a happy ending. I knew he had gone to those kind of places before. When I confronted him about what I saw he said “ well I didn’t go” as if he was expecting me to give him a high five for that. I’m currently 6 weeks postpartum and I do have depression once again. All of these things that he did have been bothering me again. I know I don’t deserve anything he’s done to me but I just can’t seem to leave. Did any of you end up forgiving your partner if he cheated? Will it get better?

He also had a threesome with one of his guy friends with a random girl they met on an app. I feel so disgusting anytime I’m near his friend ( when we all hang out)