The Office star John Krasinski, 29, and Emily Blunt, 26, who co-starred in The Devil Wears Prada, are engaged to be married, it was announced Friday afternoon. The couple, who have been dating for a year, have kept their relationship tightly under wraps. Both previously dated other celebs: Blunt was with singer Michael Buble until last year and Krasinski once dated Office-mate Rashida Jones. (Photo: WENN)