Was he cheating ?

so my husband and I separated in 2023. During our separation we lived in different states. We never legalized separation just lived apart. Things were ever difficult and complicated. My daughter and I came to visit the state he was in for the summer so he could spend time and for me to come up and see this new city and state . We planned to move here but I was not comfortable with the idea or moving. For a strange reason I had the feeling to go on his Apple watch and I found messages between a “friend” of his . They both were going through issues in their marriage and my husband was trash talking me HORRIBLY. Like I wasn’t even his wife . The things he said crushed me and my heart . I couldn’t believe my eyes. For proof I took pictures of as much of the conversation as I could to show I had proof when I confronted him. He didn’t deny but he blamed me for going through his personal messages smh. SMH . He’s gone through my phone and confronted me but the moment I do it it’s a problem. Anyway, a specific text from the friend who is a man says “oh what’s wrong did ole girl ghost you or is it your ole lady”? Now to me that means yall been talking about another female.. I confronted him about it and he says he don’t know what the dude is talking about… fast forward it came up in my memories on Snapchat. I read that message again. I feel the same reading it as I did last year. I went to confront him about it. He says it was over a year ago he thought we were past it and he don’t remember nor do he know what the dude is talking about. He says if he was talking to another woman he would have told me . I call bullshit . And feel he thinks I’m stupid. Now I’m 33 weeks pregnant with our 2nd child wondering why the hell did I even stay. Why did I think this marriage was worth it. Oh I remember ? Our daughter.. I wanted her to see 2 parents love and respect one another but I failed . Smh