My bf keeps looking at other women

Let me start off by saying , I know it's normal to look at other people , and find other people attractive while you are in a relationship, I FULLY UNDERSTAND IT.

I'm just so pissed off rn because I feel completely disrespected by my bf, staring at other women who aren't even giving him any attention and they're just minding their business, he does it right infront of me, as I'm speaking to him, i feel like this is a valid reason for me to be pissed off.

It's just so disrespectful to do it infront of me , like and the fact that he denies if and tells me I'm crazy, when I've been catching him doing this for YEARS . it makes me feel so freaking put off by him, while we're hanging out and he does it more than 5 times, I mean he literally STARES, and the women are beautiful women, I won't lie , he'd look at their butt or even boobs , and it literally makes me feel put off because it's multiple times as we're literally hanging out anywhere.

We just had an argument about it and I told him , it's like the other woman gets to think my man is staring at her and how disrespected I feel.

once again, I KNOW ITS NORMAL TO THINK OTHER PEOPLE ARE ATTRACTIVE ! but literally staring at their ass or body infront of me, multiple times a fucking day is just wrong to me .

I just don't know how to get my bf to understand this bothers me so much. I'm not insecure about myself physically, I'm not jealous, I just feel so disrespected.