What would you do?

Hi friends
I just need some help with navigating a situation I’m in with my boyfriend of 3 years
He’s been in a sport since he was like two that ties him in with lots of females which I’ve been accustomed to he’s always brought me around and I’m thankful for his girl (friends) that have been in his life and have shaped him. BUT. He has just started growing his following on Instagram and I told him I’d appreciate if he only follows back female dancers or women he actually knows, he agreed. But it’s just at the point where there’s like a few different women every month from out of our city he’s following that’s in that sport. He snaps his close girl (friends) consistently which is fineeee but it’s honestly not. I don’t want to control him but I’ve brought up my feelings many times and that’s where we’ve come to the conclusion to keep it to only girls from the sport he can follow. He put it in perspective for me like when I follow men from hobbies that I admire like men who sing, are funny, etc. but I don’t know it just brings an insecurity out in me that after three years, still isn’t resolved. I’m tired of talking about it, he’s very open to me checking his platforms open passwords etc and he posts me, he’s not hiding me! But does anyone have any advice on how they can move forward in this situation? I just feel like it will always bother me. He’s 24 and I’m 23 and after 3 years you know we’ve been talking about our future engagement and what not. But I want to go into forever with an open heart and a calm mind. Social media has ALWAYS been our number one struggle. Don’t know how to go forward