Background
Colletti was born in, California, the youngest child of Lorilee (née Goodall) and Bruce Colletti.
Colletti was born in, California, the youngest child of Lorilee (née Goodall) and Bruce Colletti.
As a teen, Stephen attended Laguna Beach High School in Laguna Beach, California. He attended San Francisco State University.
Colletti appeared for two seasons on the Music Television reality television series Laguna Beach: The Real Orange County. Colletti has an older brother John, and an older sister Lauren. In 2004 Music Television 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 Music Television Reality Television series The Hills.
Colletti had a temporary stint as an Music Television VJ for Music Television"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.
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. 2005, nominated for Teen Choice Award for "Choice television Reality/Variety Star - Male" for Laguna Beach: The Real Orange County.