Jason Mraz and Tristan Prettyman Announce Engagement on Twitter

 Jason Mraz is an engaged man. The "I'm Yours" hitmaker popped up the question to his singer/songwriter girlfriend Tristan Prettyman and she said yes. They quickly reached out to their Twitter followers to announce the happy news. "She said yes," the Grammy-winning singer wrote in a short message on Thursday night, December 23. The bride-to-be, meanwhile, broke the news in a longer post, "