Jason Segel has confirmed he is dating Michelle Williams. The "Five-Year Engagement" star was first photographed with "Dawson's Creek" alum last month, and has now confirmed they are indeed an item. When asked about their romance, he said: "I think we would just very much like to be happy. That's all I'm going to say about it." His current co-star and off-screen friend Emily Blunt jokes that the 32-year-old actor has significantly matured thanks to Michelle. She said: "He's a man-boy! He used to be a boy-boy and now he's a man-boy." Jason added, "I think I might even be becoming a man-man ... potentially!"