Social media ruining relationship

I’m not a controlling girlfriend but there are boundaries in s relationship that should not be crossed and if they are then I believe talking about it is crucial.

In the past, there have been a few issues with girls in my relationship and naturally in going to feel jealous or upset when I notice something happen. My boyfriend has been liking a lot of girls photos that contain bikinis abd butts and boobs and it has not made me feel good. I have told him before that I don’t like when he follows lots of girls on instagram or like their posts but I’ve noticed he’s done It again. Of course I’m going to talk about it to him but I just wanted your opinion.