Most Talked-About Couples

Some are hush-hush, some surprise us, and others are just hot, hot, hot. Take a peek at the most fascinating celebrity duos.

BOY TOY:

The minute Demi Moore and Ashton Kutcher (in L.A. in September) started dating, they were such an odd couple that we were sure they were just "punking" us. However, it seems to be real: Months after their relationship began, they continue to be "all over each other," as a fellow reveler at a P. Diddy party told PEOPLE.