I cheated while pregnant

Yes, it’s true... and my partner did what he should’ve done. Left. I’m lost, I want him back and I regret what I did. I dont know why I did it, I do, but I don’t want to make it seem like I’m blaming anyone bc this is 100% my fault.

I had been with the father of my child since I got pregnant, I knew him for three weeks, then he left for 4 months, and I’d back now. He had got me pregnant in those few weeks. Idk if it’s bc he’s young or a “rapper” or what but he comments under girls pictures, texts them, spams their accounts with like, and typically I wouldn’t be bothers bc I consider myself confident and an attractive girl. But I suppose bc im pregnant, I just don’t feel like myself. I can’t help but feel some type of way when he doesn’t show me the same attention he does to them. And I wouldn’t be bothered if it was famous girls or girls that had a good following base... but it’s local girls he knows. And I had been telling him this stuff bothers me and he would blow it off. So I had a friend who I would talk to everyday, I expressed we’re only friends and I want to build a relationship with this man I’m having a child with. And one day we got into an argument and when we do, he just ignores me. Flat out ignores me. So I went and slept with my friend, I cried once I got in the car. I felt and still feel bad bc I want to be with my my baby’s father.

A few weeks pass, and I tell my friend again, that I don’t want anything, we are just friends, I’m not leaving my partner.

He got upset and told my SO, now I’m trying to fix it. But he won’t talk to me and says he doesn’t want anything to do with me. I’m lost. I’m sad. I know what I did was wrong, I just wish I could make it better... do you think he will come back?