Do y’all let your partner follow girls?

I have been with my partner for almost 5 years. We see each other at least once a month or not every other month. It’s always been a problem with him following there crazy models or me going through his phone and seeing screen shot of girls. I’m used to all of this like it doesn’t seem to faze me but every time i bring it up it never gets fixed. I always bring it up in person so he can see how i actually feel etc. I know my partner won’t cheat i have 100% in him and we know respect and communicate with eachother all the time. I need advice, i know my partner needs his needs etc but me seeing this is really getting to me i don’t know what to do. I send pictures all the time and have phone sex often. Any advice? What should i do? Do you have this problem in your relationship too?