Gaston appeared as Taylor Swift's love interest on her 2008 music video for "Love Story", and also appeared on the pilot episode of the television series Glee, which premiered on the Fox network on May 19, 2009.
During the summer of 2010, Gaston was a temporary opening act for American Idol winner Kris Allen.
On February 6, 2014, it was announced that Gaston joined the cast of the soap opera Days of Our Lives. He played the role of Jordan Ridgeway's brother, Ben Rogers, making his first appearance on February 27, 2014. Gaston was let go from the series at the end of the first 13-weeks of his contract cycle; he was replaced by former All My Children actor Robert Scott Wilson.