agree or disagree?

So my boyfriend is always looking at girls in front of my face, and not just looking, STARING, to the point that if he sees a girl he will turn his head for them. (Literally will continue to turn his head when he sees a girls ass) it makes me very insecure that I'm not good enough for him. I have explained how it hurts me and he never stops, it makes me feel like shit. I will cry as soon as he does it because I feel like if someone you love is trying to look good for you or dresses up for you, you should be giving them attention not other people. I don't check out guys in front of him ever because I'm so attached to him. And love him and I think it's disrespectful to check other people out in front of your SO, especially stare and turn your head for them.

(Ps he doesn't give me much attention, he barely compliments me, doesn't look at me much, and is pretty verbally abusive to me. He has been staring at girls for quite a while now but had recently starting literally turning his head to their asses, I'm getting really depressed from feeling so insecure)