I'm hoping someone can help me find this, because I've been looking for it for almost two weeks and it's driving me crazy. I remember that it started with Spike teaching Xander how to play a card game because he was going to Vegas with Anya, but while they were there he found her with another guy and discovered that she had been cheating on him with this guy for a long time. Then he left and went home, and Spike helped him out and I don't really remember the rest. Any help would be much appreciated. This really is driving me nuts.