Kutcher, 25, and 41-year-old Moore shocked fans when they starting dating earlier this year (03), with many dismissing it as a publicity stunt for the actress' imminent comeback in summer (03) action movie Charlie's Angels: FULL THROTTLE.
But the screen stars have defied critics' glum predictions by remaining together, with Kutcher even becoming an extra father figure to Rumer, 15, SCOUT, 12 and nine-year-old TALLULAH - Moore's children from her marriage to Bruce Willis.
THAT '70S SHOW star Kutcher says of his belle, "She's everything to me - funny, sweet. Being a part of moulding anyone's life is an incredible thing."
He adds of their much talked about age gap, "It's 15 years, not 50. I'm still in love with her when she's 70."
And Kutcher, who has reduced his partying since finding love with the GHOST star, has even taken Moore home to meet his mother DIANE PORTWOOD in Homestead, Iowa, which has sealed their place atop IN TOUCH magazine's list of the Hottest Hookups of 2003.
The top 10 is as follows:
1. DEMI MOORE + ASHTON KUTCHER
6. Vivica A Fox + 50 CENT