News 'Kyle XY' Star Matt Dallas Comes Out By Antoinette Bueno 8:17 AM PST, January 7, 2013 Getty Images Kyle XY star Matt Dallas, 30, officially came out as a gay man on Twitter, announcing his engagement to musician Blue Hamilton late Sunday night."Starting off the year with a new fiancé, Blue Hamilton. A great way to kick off 2013!" he tweeted, along with a photo of his fiancé posing next to an adorable dog. Pics: Out and Proud Celebs in HollywoodDallas, 30, also starred in Katy Perry's music video for her 2010 hit Thinking of You, and most recently the Hallmark movie Naughty or Nice.Hamilton is an independent musician based in Los Angeles.