Does this sound like cheating?

I’ve been with my so for awhile now and we share a baby together. She is almost 2 years old. He has had a past of cheating, maybe not physically. But I do know for sure he has emotionally. I mean like he was talking sexually to a women at his work. We moved past that because we were expecting a baby. Lately he has been extremely rude and secretive about his life. He doesn’t want to tell me anything, he is being distant for sure. He keeps telling me that he doesn’t want to talk to anyone including me. I’m not sure if it’s cheating or he is struggling with himself. I don’t know if I should move past it and not talk to him or keep trying to get him to talk to me