Trust issues

So I’ve been cheated on, left a single mom, been a side chick, & these all happ with multi men. So now that I’m with a new guy and even though he seems like “the one” I always find myself questioning him too much, or side eyeing him. But he’s never ever given me a reason to think he would cheat or even flirt with another woman. I’m just scared from my past. And it’s starting to piss him off. We’ve been together almost a year. But the way I see it is.....you just never know. Because all of my ex’s claimed they loved me and would never hurt me. And even being a side chick, I saw how he loved her....but would be at my house. So I’m just trying to finally trust someone.