Help Me before I kill him over my own insecurities 😂

I’m 20 & my boyfriend is 30. I thought dating an older guy would be easier but turns out they’re just as retarded 🙄🤦🏽‍♀️ We’ve been dating for about 3 months . He’s a personal trainer so he works with other women , which doesn’t bother me. It takes a lot for something to actually bother me or drive me insane & I finally found what the hell it is 😭 : His Instagram.

Before I get into detail I know it’s just pictures & whatever but I don’t wanna kill him over a picture so help me 😂 He has 7,000+ followers and 95% of them are women. He posts fitness models & what not to help advertise for what he does , That’s all fine and dandy but It’s made me real self conscious.. I’m not toned 🤷🏽‍♀️ I have a little tummy and an hour glass frame. We haven’t had sex yet so he doesn’t know what I look like underneath my clothes. I’m not beyond out of shape but I don’t have a six pack 😒 ..

He’ll like and comment on certain pics of females with a fat ass & flat tummy. He doesn’t like any of my pics or comment underneath them.. So Ofc my mind wonders & Something tells me to look through his phone . Now , If I find something I don’t like I might just have to kill him 😂🤦🏽‍♀️ It sounds childish , But How do I tell him that it makes me uncomfortable to see what he posts and likes? Last thing I need is for him to say I’m acting as a little girl 🙄