How can i learn to be okay with my bf watching porn and finding other girls sexy?

Hi all, so this is an issue I've been dealing with for quite a long time. It is a controversial subject, but I really don't like the idea of my boyfriend using porn. I see it as him looking at another girl naked that's not me, and getting off to her. Even if it's just to the act of sex.. he's still cumming while staring at another girl naked.. and to me that feels like a form of cheating. He recently liked a post about different porn stars and said "one girl caught his eye" and "then i remembered it bothered you so i didnt look her up."

This caused a BIG fight in our relationship. And this kind of thing has caused many others. Like.. he saved the post so that he could look up naked pictures and videos of this girl to get off to.. and thats not cheating?

The thing is, I KNOW that it's normal. I know that every guy watches porn. I WANT to be okay with it. I do. I don't want to fight him anymore and i don't want to control him by telling him he can't watch it.

But how can i be? When deep in my core i feel like its cheating?

And when we watch a movie he sometimes makes sexual comments like oh look how tight her outfit it, oh thats so sexy bla bla bla. He views girls in a very sexual way and i guess thats how a lot of guys are. But i need help on how to change my mentality. No judgement please or calling me a bad girlfriend. I already feel very bad about our fights. But i have bad anxiety and it is something that makes me feel insecure like he is choosing them over me. Like, i know that he loves me, he doesn't love them. But i want to be the only girl he fantasizes about as well or looks at sexually and idk why that is so selfish /;

Pls be nice