So far the reason for their split is based solely on speculation. For years they've been one of Hollywood's "it" couples, but in recent months their relationship became tabloid fodder as rumors swirled about Kutcher's alleged infidelity.
"It was somewhat surprising to see Demi say that she was going to file for divorce," said US Weekly Entertainment Director Dina Sansing. "We had seen a lot of controversy, a lot of speculation on whether or not they were going to stay together, but things had really started to settle down."
Moore is 49 and Kutcher is 33, making for a 16-year age gap between them. They were married in September 2005. Moore said in a 2007 Vanity Fair interview that her relationship with Kutcher caught them both by surprise." />