The 30-year-old actor announced the news on Sunday night via Twitter.

“Starting off the year with a new fiance, @bluehamilton. A great way to kick off 2013!” he Tweeted, along with posting a photo of his fiance, who is a Los Angeles-based musician.

(Check out Matt’s groom-to-be, HERE!)

Matt played the title role in “Kyle XY” on ABC Family from 2006 to 2009 and recently starred in the holiday TV movie, “Naughty or Nice.”