If you bring a lawsuit to the court, you must have the law, otherwise the court will not accept your lawsuit. First of all, the other party has your photo, why does it have your photo? If he doesn't know you, it's a sneak shot, and you can sue. If he is your boyfriend, it's hard to sue him if he doesn't threaten you with photos and expose them! The most important thing is that you should prove that he has your picture against you. If not, it's no use suing!