My lasy boyfriend cheated on me, used me, and abused me for 2 years

Actually, don't answer that if it'd bring up unpleasant memories.
Try thinking of it like this, if he abused you, think of all the times you angered your boyfriend yet he still would never do something like that. Try and prove to yourself that he would never do something that horrible.

See if you can find a way to beat the bad thoughts rather than just avoid them. What did your last boyfriend do?

I'm going to trust you and listen to everything you say. I'm going to try my best to trust him. I just hope I don't think negative thoughts again

Oh I'm sure it is, I'm just saying that's what will help relieve some stress. I'm not saying "trust in him this instant", just that if trust is the issue, that's what'll fix it.

I really want to trust him, but it's kind of hard right because I'm still dealing with my past

Oh I didn't mean to say you did, I just meant my friend did in the sense that he would never call (it's a long distance thing) and does a bunch of really selfish things but she won't break up with him still. You kinda just have to trust that not all guys will be abusive and that he wouldn't do that.

I don't let my boyfriend walk all over me because he's not like that. If he did, I would've said something to him about it. I don't want to suffer or worry throughout my relationship. How can I change that?

Yes and no. Yes because my friend (not sure if you're this bad) jumps to every conclusion and lets her boyfriend walk all over her because she thinks she'd be pushy to say anything. No because, even though she is like this, she's not any worse of a friend. What I mean is if you worry about every little thing it'd kinda make you suffer throughou the relationship but it's not some huge flaw that'll tear apart the universe thread by thread.

Sometimes, I have a hard time trusting my boyfriend because I think I'm going to relice my past. I know he wouldn't do that to me, but I just have these thoughts that it's going to happen. Is that a bad thing if I sound just like your friend? I don't like to worry about everything, but it just happens. I don't want to be like this throughout the entire relationship