Trivia

Was a groomsman at the wedding of One Tree Hill (2003) costar Lee Norris.

Close friends with One Tree Hill (2003) costars James Lafferty and Robert Buckley.

Ex-boyfriend of Hayden Panettiere.

Worked in a surf shop before graduating from Laguna Beach High School.

Stephen's paternal grandfather, August Colletti, was of Italian descent. The rest of Stephen's ancestry is Irish, Scottish, English, and Swedish.

Had an on/off relationship with Kristin Cavallari when he was in high school.

He attended San Francisco State University for 1 year (04-05) and his major was radio and television. Coletti decided not to return to SFSU. Instead he moved to Los Angeles to pursue his acting career.

Ex-boyfriend of Chelsea Kane.

Good friends with Lauren Conrad.

Guest-starring on One Tree Hill (2003) as "Chase Adams". (January 2007)

Enjoys the beach.

Filming Normal Adolescent Behavior (2007). (July 2006)

Hosting MTV'S "TRL". (2006)

Attending San Francisco University. (November 2004)

In November 2023, Colletti announced his engagement to journalist reporter Alex Weaver. After a year of dating.