idk what to do

So I've been with my boyfriend for about 3 months now and it's great. He's amazing. Does everything and more for me and I honestly couldn't have asked for a better person to be with but I still have my worries. I'm thinking it's because of my past relationships and them being so crappy (cheating, lying, etc) that I'm having a hard time trusting him. Although he hasn't done anything to break my trust he's done the opposite really, it's still in the back of my mind that he is capable in hurting me. Has or is this currently happening with anyone else? I really do like him and I don't want it to end so is there any way to get over these worries of mine or will time tell everything?