'Kyle XY' star Matt Dallas announces engagement

Congratulations are rolling on Twitter for Matt Dallas and Blue Hamilton.

Dallas, who starred in ABC Family series Kyle XY from 2006-2009, shared with fans today that he's "Starting off the year with a new fiancé, @bluehamilton. A great way to kick off 2013!"

The actor, 30, is also being praised for the "classy" way he used the announcement to come out. He and musician Hamilton have been quietly dating since 2009, reports Us Weekly.

Dallas recently starred in the Hallmark TV movie Naughty or Nice. According to E!, he's also set to return to his ABC Family roots with an upcoming role on the hit series Baby Daddy.