Erica Marsh is a former Tree Hill High School student and the class president during her freshman and sophmore year. In her junior year she lost out to the popular Brooke Davis and she struggled to adapt to not being in the position of power. Initally straight-laced, her lack of responsibility after losing to Brooke meant she was able to experience more of high school including partying and dating. She dated Mouth for some time, but they broke up before senior year.
- Mouth McFadden
- Start Up: "I'm Wide Awake, It's Morning (2x19)
- Broke Up: Between "The Leavers Dance" (2x23) and "Like You Like An Arsonist" (3x01)
- Reason: Now popular, Erica felt she didn't need Mouth