I want to love myself.

Hi ims, This is a tricky one. im trying to learn how to love myself, I don't think I'm over disgusting or anything, and I'm not fat but I'm just so insecure! Constantly comparing myself, and everyone looks better, does better etc etc I was in a bad DV a while ago and I feel that's probably got a lot to do with it because I've never been this insecure. I'm now with some else (have been for a year) and his amazing, treats me well and is never short of a compliment, his a great guy and I know he would never do anything to hurt me, ever. My insecurities really upset him, he feels it's something his doing or not doing and
It's not and I've explained that and he understands as much as he can, but because I'm so jealous and insecure he feels it's because I think he would stray, which isn't true at all but I understand why he feels that way, he explained to me that he doesn't get jealous or insecure because he knows I would never cheat or anything so he has nothing to feel insecure about, which makes sense. But I literally feel my heart sink if he talks about a girl at work or if a really attractive chick walks past or is even on tv! It's getting really bad at how much I'm finding myself hating woman! Hating how I look compared to them! I need to love myself, I hate feeling jealous and insecure. How can I help this?!