We've all heard about bridezillas, but what about guest-zillas?
Just went to a wedding about 13 days ago. This last Tuesday the groom calls me in absolute shambles. His best friend, who is (was) also his boss and is married, had been sleeping with his fiancée both before and after the wedding. This f*cking piece of sh_t was one of the camera men, and went around asking people to say nice things about the couple and turning the camera around to give long speeches about how they were meant for each other and he and his wife were so lucky to be their friends. So my good friend lost his best friend, his wife, and his job in a single sentence; his life is destroyed and he needs constant support. Best of all, the cheating bitch says she's in love with the boss/friend, and he says the same. (Source)