First of, they put up a pic cause they want people to look, comment or like, that's why there is a "comment or like" option! they cant tell u wat to do! Delete and Block their sorry ***!
Stop centering your life around facebook. And live.
it very immature to be so frustrated over something so stupid like this.
Block and delete, and just tell them to go shove it where the sun don't shine. Pretty much the direct approach, one of many I guess
Its up to you! Its ok to confront them and tell them how you feel... just like its ok for them to ask others not to like stuff (which seems retarded to me since you can't tell other people how to feel hehe)