my SO and I have been together for 10 months now and I still can't help but feel insecure and worried that he's going to cheat on me.

I know I shouldn't compare but I've been in 4 previous relationships and got cheated on in all 4.

it's a constant thought on my mind that I'm just not good enough and eventually he'll be out and find someone more attractive, hotter, and more of this type and cheat on me.

I really do want to trust him but every time he is out my mind constantly jumps to the thought of him cheating because I'm not good enough. Idk how to talk to him about how I'm feeling because I know that I'm in the wrong and I should go and be a crazy gf on his asss.

How can I change this?