jealous for no reason ?

So my bf and I have been dating for a while and he gives me absolutely no reason to not trust him. So I completely trust him. BUT I hate social media... I see other girls posting pics in their undies or thong bikinis, which is fine yanno im happy they're comfy with their bodies to do that.. but I get upset when I see my bf like those pics especially if the captions say something like "let me get up on ya💦" or something sexual. So my reasononing to my bf is that I don't post pics like that and those captions because I am committed and it wouldn't be fair to him if I post pics like that just so other guys can like it. And some (not all) of these girls will post just to get a lot of likes or likes from guys (I know it happens cause I would do that when I was single) but Idk I feel like I'm just getting jealous for no reason or that I'm being too controlling? It's never really caused any fights we never really fight, and he was nice enough to say yeah no I get it it'd make me uncomfortable too so he tries not to like those kinds of pics.. idk I'm looking to see others opinions I know it's just pics so maybe I'm just being too sensitive