I like birds

My boyfriend disrespecfully stares at every single woman that walks past. Every single woman and I am not overdoing here,he will turn his head all the way and carefully considers her ass and her breasts. It is interesting to see. It would be more interesting if it werent my boyfriend.
I have been using all my tools to try and explain to him that this is very disrespectful and it is not good to do that to a woman, to the woman he loves more than life itself , according to him.
His claim is that this is an old “habit” and he is trying to get rid of it. It looks to me it must be very difficult to get rid of this habit, as it looks to me he cant get rid of it at all. I kind of start thinking that its simpler that it looks, bad faith?
There is a funny side to t, I would say it a tragic side, more that a funny one.
He denies most of the time, but sometimes, when its impossible to deny, so he goes: “I like birds” (when the tall blonde he is staring at has a huge ass and birds on her dress)” or “I am visual”, I look at everyone, man and woman.
Funny thing is that his wife left him because he cheated on her several times over 25 years. According to him, he learned a lesson. I think a man who has been through all he’s been, should have learned how to treat a woman with extra respect. No doubt its unnaceptable and extremely disrespectful to stare at every single female. Its ok to look, its ok to admire but there’s some pathology in the way he does it.
What are you going to talk to a man who says he likes birds? Here’s another disrespect. One is to look and the other is to treat you as an idiot. The more you complain, the more “hysterical” you are.
One might think: “Well, why dont I start staring with the same desire at every single penis hanging behind a pair of pants? It would be another problem, I dont like doing this and I dont like being mean.
So, here you are, with the men you want to spend the rest of your life with, having to deal with that. Is this a reason for you to leave? I want to stay, I love him but is it going to be unpleasant to go out forever? Is it going to be the case that I wont want to do things with him so I don’t have to go through this?
And you know what? I have to listen to him saying” you are so jealous, so insecure”.
My favorite: “You don’t trust me”! So, you feel like slapping him on the face, running to the reservoir at central park and jumping into the water. Am I missing something?
I decided to pretend nothing is going on but its quite "disturbing" to go out with your boyfriend, who loves you more than life itself but can let one, and I mean "one" woman walk past without desiring.
We went to a concert at Carnegie Hall. He did not look once at the stage. Looked non stop to everytihng that moves. on the waay in, during th eocncert, on the way back. I say nothing the first 80 times, but when it gets closer to 100, i start findind a bit difficult not to mention. I dont like it, i dont trust a man who behaves this way. Please let me add that he has a hitory of infidelity behind him...
To make it a bit worse, he comes to sey that he did not look at women last night because there were no wmoan to look at. ( Hes been considering searching , right?) or "I love looking at people", " I only looked on the way in and on the way back but not at the concert itself" Can anyone help here?
I am starting to dislike doing things with this man in public, and if I am marrying him in the future, that might be a bit of a problem, right?
just to add, he also flirts with my friends. What about that? No, not all of them, only the relatively good looking ones. And to make things worse, instead of admiting to it, he says its a cultural difference, that despite the fact that me, HEr and everyone else agrees that he was flirting, he swares that he wasnt, which makes me the crazy jealous one. Is it fair? What to do?
As he says Why dont you let it go?