Most Helpful Guy
uhh I have friends who are girls and I have a girlfriend. Some of them, well all of them put photos up on Facebook or instagram or some other site and if I see it I like it, not because I like them but because I think its a nice photo they look nice in. I still Love my girlfriend and wouldn't do anything unfaithful or cheat or any smiliar act.
Maybe your over thinking this or maybe there's something your not telling us or maybe both your boyfriend and I have it wrong in thinking we can like the photos of other girls on social media. I certainly hope my girlfriend does not think I am being unfaithful or have a hidden agenda by liking photos of my friends.
Most Helpful Girl
It doesn't really seem like that big of a deal if he likes someone's picture, social media should not cause conflict in a relationship lol. I think everybody, not just guys, tell people what they want to hear. Guess he just has a hard time backing it up. Just talk to him if it bothers you