What to do. What to do.

So I decided to look at my boyfriends phone 3 days ago. I saw a message from a girl that he said he grow up with he decided to put it on do not disturb on their conversation. He also decided to add a bunch of girls on Snapchat. I finally said something to him and he said I did because you laugh in my face about P. So he basically did it out is spite. Every time I try to trust him, he goes and does shit like this. I’m just tired of going in circles

Side story: before I got with him. I was married with about 2 years. P is the father of my daughter we got married he was about to join the military & we just had a baby. So I meet G (my boyfriend now) online in 2017 whenever P and I decided to go our separate ways. Fast forward I am divorced now so I told G to stop bring up P.