Cheating

My SO has been cheating on me we fight about it all the time I’m really scarred from a couple of things he’s done in the past and he says “oh well it happened get over it or break up with me” we never get the chance to talk about it because he says “I’m not about to keep talking about the same thing every 2.5 seconds” guys I’m really hurt and he leaves to go to “bathroom” in the morning and all through the day and I know that’s where he texts the girl at . He says his stomach hurts and he has to poop but often there’s no toilet paper in the bathroom and it doesn’t stink when I go in after him. In one of the screenshots I seen of him talking to another girl she says where are you wyd he said I’m in the bathroom and I haven’t been doing nothing with her I been sleeping on the couch (which he hasn’t he sleeps with me and our baby every night) and lately he hasn’t been wanting to touch me he doesn’t want me next to him he elbowed me in my face yesterday because I was trying to cuddle with him he says “that shit out get off me I don’t feel like doing that lovey dovey shit right now that’s annoying you clingy af” so he went to the bathroom for a hour and came back mad yelling at me and cursing at me pushing me I just don’t know I wonder if he’s still texting her... can you get ptsd from a bad relationship? I hate to hear the girls name he got it tattooed on his arm right above mine. I hate seeing him on his phone because I think he’s talking to other girls he was talking to 4 saying he was using them for money. Guys I’m really broken and I feel ugly now because he doesn’t want to be around me😪 I really just need someone to talk to. Please ...💔 also guys there’s a lot to the story he had this girl living with him for a whole year because “she didn’t have no where to go” & recently he got another female pregnant. Everytime I try to leave he gets mad or physically does something about it I just wanna be happy. And I can’t be because everytime I look at him I’m reminded of how I wasn’t good enough . Last year he got 8,000$ in taxes and spent it all on her. Why can’t I just leave and be happy ....