I think I am now a toxic in a relationship with my boyfriend,

The first thing happened, my boyfriend Chatting with other girls, talking to his ex before. After every time I find out what he did, we're always get fixed. But I know to myself that my trust for him is already broken. After that, he renewed himself. He also gets tired of cheating on me by chatting other girls.

But what happened after, I am always paranoid. Thinking and thinking on my own. Always checking his messenger account, or any apps he have. He stop cheating on me.

But the issue now is he always follow, adding sexy girls on Facebook. Because I am so insecure because of what happened before. I always telling him who's that girl he added on Facebook.

Until he gets angry. He told me I never had boundaries. No sense of privacy.

I felt so bad. I told him to change his password to all of his account. But he refused. He doesn't want to be a bad guy. He just told me that I should give him some privacy about that thing.

I want to trust him so bad.