i need some sincere help please

maybe that's all it's about. insecurities. it's controversial when speaking of it but I'm against porn. anywho, I didn't find out my SO was into it until 2 years into our relationship. he knew my position and hid it well. after I found out he started checking girls out. I always kept quiet but finally confronted him cus after a miscarriage he and a girl were giving each other a look while I sat right next to him. that broke me and don't think I'll ever forget. although it's been years and I can tell he's made changes I still feel uncomfortable in my skin. I see the way he gets when a pretty girl walks by him. i don't get a compliment out of him at all. Maybe I'm exaggerating, maybe it's just me but it's starting to hit me hard. I don't love us the way I did. I don't love myself the way I did I love my kids to death but am starting to regret us. I'm trying to hold on and fight for us but has been hard. I'm starting to drift away and I know he knows it. tips on how to better myself or anything would help...please