Stephen Colletti (born February 13, 1986) is an American actor and television personality who portrayed Chase Adams on The CW Drama television series One Tree Hill. Colletti appeared for two seasons on the MTV reality television series Laguna Beach: The Real Orange County.

Colletti was born in Newport Beach, California, the youngest child of Lorilee (née 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. He attended San Francisco State University.

In 2004 MTV commissioned a planned Reality Television series Laguna Beach: The Real Orange County which followed the lives of wealthy teens and Colletti was asked to appear on the show. The series premiered in September 2004. Colletti returned for the second season with the remainder of the cast from the first season. In 2006, the New York Times described his role in the series as “still fighting to acquire some charm to animate his idol looks”. Colletti did not return for the show’s third season.

Upon graduating high school, he attended San Francisco State University for a year before returning to Los Angeles to pursue an acting career. In 2007 Colletti appeared as himself in an episode of another MTV Reality Television series The Hills. Colletti had a temporary stint as an MTV VJ for MTV’s Total Request Live.

In February 2009 Colletti portrayed the role of the love interest in the music video White Horse by Taylor Swift. Swift says that he was selected for the role because “the guy in the video is supposed to look really sweet and someone who just looks like he would never lie to you.”

In January 2007 Colletti was announced to have been cast in a major recurring role on The CW teen drama television series One Tree Hill. Colletti portrays the role of Chase Adams, a high school student who plans to save himself till marriage. Over the course of the following seasons Colletti maintained a major recurring role. In November 2010 Colletti was confirmed to have been upgraded as a core series regular for the series eighth season. In May 2011 The CW renewed the series for its ninth and final season which Colletti maintained his regular status. The series finale One Tree Hill aired on April 4, 2012.

There were rumors that Stephen was on the Disney channel show “Bug Juice”, but he has publicly said he was not on the show.

Source: Wikipedia