What in the self sabotage is going on??

I think my boyfriend is trying to self sabotage our relationship..

We dated over a year ago and when we dated at some point, I realized he is not taking me seriously so things became petty and messy even though I was down bad for this man back then I knew he had feelings for me, but he was just playing too much

Fast-forward one year later, we’re back together and it feels different. I know that this man is going to be my husband, but we both talking to each other’s past in both found shit that we did to each other in our past. I’m able to move past it even though he was. In a relationship. With this white girl living with her taking care of her, but had an issue being my boyfriend at the time immediately after we broke up, he got with her.

He’s mad that I had other people I dated and at some point found out that when we were together, I slept with someone else who stayed a friend..

At this point, I thought that we were done with all this baggage and move forward. Tell me why this man still decided to go through my phone at three in the morning.

I keep thinking you’re really happy together because we actually do love each other and we have a great time and things are cool and then he goes into my phone looking for old shit.. most of it is not even when we’re together he’s just mad any man has ever had me …
Is this man gonna leave me drive me away or just cut the shit ??? Idk am I crazy for still being by his side ??? I feel like he can’t let us be he keeps trying to sabotage us!!?