Take your pictures down.
Ex keeps liking pics on insts/commented a kiss emoji recently. He has a gf dont get why he does it Been 3yrs since we were together i dont get it. I ignore it but he keeps doing it anyone know why or what to do about it?
Take him off or block him from your page
This happened to me and caused conflict in my relationship. Block him. He's trying to get a rise out of you to stir up your relationship and make it known that he's still around so your bf will be jealous
Confront him about it.
it's been 3 years?
i'd say he's just fooling around and passing time.dont take much notice of it!