Demi Moore and Ashton Kutcher
08/04/2009 at 04:20 PM EDT
He's boyish, and she's beautiful – and to Ashton Kutcher
, wife Demi Moore
just keeps getting better every day.
"Doesn't she? I don't know – I'm trying to figure it out. I so see it, man," he told PEOPLE on Monday's red carpet of the Hollywood premiere of the movie Spread
, in which he plays a professional good-time guy. "She becomes more beautiful to me by the minute, and I don't know what it is. She's got the magic thing."
Kutcher is also one of the producers of the R-rated movie (it opens Aug. 14), which contains sexual content, nudity and strong language. And how did Moore react to his role in the provocative picture? With pride, says her husband.
"She appreciated the work that I did and she thinks it's a good movie," Kutcher, 31, told PEOPLE.
When it came to the rumor that Demi Moore, 46, planned to become known as Demi Kutcher, however, Ashton expressed less certainty.
"She hasn't told me," he said, "so you might be revealing a secret or something. I think that would be fantastic, but at the same time, it's a name, you know what I mean? Call me Mr. Moore. I've been called a lot worse."