Best friend dilemma

So me and this guy have been talking for about a year and four months. He’s really close with with friends and I don’t have any problem with that. One of his best friend is a girl and he would post videos of him sometimes holding her legs while she sits on his lap or post her when they go out to eat and caption it relational goals and just bunch of other stuff things close to that. I did told him that I didn’t like that fact that he would post pictures of her sitting on his lap while he’s holding her legs but he still post things like that. We have been talking about our relationship and he has state that he wants things on a more intimate level where we would both be in love with each other. I certainly don’t want to be the kind of girlfriend that tells her boyfriend who to hangout with or what to post. Am I out of proportion for wanting him to not post things like or is it okay and I’m just in my head???