Ashton & Demi: Inside Their Relationship

Can you believe it's been a year? See how the May-December pair went from summer fling to the real thing. By Lucy Maher

6 of 14

SUNDANCE SWEETIES

Before the Jan. 17 premiere of Ashton's movie The Butterfly Effect, he and Demi took in a Sundance Film Festival party (left). The next week, they hit New York, where Ashton told David Letterman that marriage is "not in the datebook."