Stephen August Colletti is an American actor and television personality. Colletti portrayed Chase Adams on The CW Drama television series One Tree Hill and has appeared as himself on the MTV Reality Television Series Laguna Beach: The Real Orange County Colletti was born in Newport Beach, California, the youngest child of Lorilee (nee Goodall) and Bruce Colletti. Colletti has an older brother John, and an older sister Lauren. As a teen, Stephen attended Laguna Beach High School in Laguna Beach, California. In 2004 MTV commissioned a planned Reality Television series which followed the lives of wealthy teens and Colletti was asked by to appear on the show. The series premiered in September 2004.