What faith_salon said. Zack's an egotistical jerk, plain and simple. I still can't believe Amy went and did it with him after he dissed her in front of everyone. I don't think Zack knows how to be a decent guy.
Zack and Toni will get into a fight over the mirror in their room. Zack will be mad because Toni beats him in a flexing contest. You read it here first.