Please help me. I don't know what to do.Well,I'm in an uncomfortable situation.I've been with my boyfriend for four years,you know,sometimes there were moments of weakness. And I met this one. First, innocent conversations. One day I went to a party without my boyfriend, I had an argument with him. I wrote with this one all the time, and drunk I sent him a naked picture. I had a fight with him now and he's blackmailing me that if I don't tell my boyfriend, he'll give me that photo wherever he can. But if I tell my boyfriend, it's over, and if he gives me that photo, it's even worse. What should I do?