Ex hasn’t talked to me in 3 days

We been together for 2 years, he said he wouldn’t marry me and that he can talk to any females he wants. I caught him trying to hide talking to his ex and other females. I left our house and took the kids and went to get my own apartment in another state. I ended up sleeping with someone and he has slept with multiple people in our relationship and I still didn’t until now. He said it was all my faults do that it’s over before he started ignoring me for 3 days.... but I broke up with him. I want him to text me sorry and all that kind of stuff, do u think he will and is there any way to get his attention?