I'm tired (sorry, I need to vent)

He cheated on me for two months, at the end of my pregnancy. I found out on my birthday about it, and 13 days before I gave birth that he gave an std. Due to financial and logistical reasons, I stayed with him until our baby was two months old. After that, I left with the baby and my dog. He visited once a week, then once every two weeks, asking for another chance, claiming he had changed and loved me.🙄 In January, I found out he had a new girlfriend (thanks to her highlight story) but he denied it. On March 1st, we talked again, and he, once again, asked for another chance. I said no and asked him to visit every three weeks instead of every two. He then said he hates me, he's disappointed, and that's selfish of me for not thinking about the baby's well-being by getting back together. Since then, I've heard nothing from him — no messages, no visits. The day he was supposed to visit, his girlfriend posted a story with him. I'm working hard to move on and heal, but every time he shows up, it drags me back.