Where's your sense of honor and chivalry?!?! Don't let some guy get away with hitting on your woman, take him to a quiet field and duel to the death with pistols. Or, you could go the mafia way, have your buddies hold him down while you threaten his dangly bits with a sharp rusty object of some kind. If you decide to go the mafia way, just make sure you sound and act really cold and calculating.