Played By: Mischa Barton and Cam Gigandet

This one's easy to rationalize, isn't it? Not only did the tempestuous bad boy lure Marissa away from her friends, but he also turned her into a mild sex addict, cheated on her, and tried to frame her ex-boyfriend for robbery. Oh yeah, and there's that minor detail that he fucking ran her off the road, killing the show along with her.