Am I tripping or am I right?

On my boyfriends insta he is always liking other girls photos and it isn’t like liking on here and there. It’s like liking every other or every pic they post. Honestly it makes me wanna leave him. He’s never posted me on his insta ever even after we went on vacation for my birthday he posted a pic of our hotel and another pic of him n his guy friend that went with us and if I comment on his stuff he doesn’t reply. It honestly makes me not wanna be with him is that petty or should I be fine with it?