Smart girl, though she probably should not have married him if she was worried about it in the first place. <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" />

Charlie, Denise & the Prenup


A day after pregnant actress DENISE RICHARDS filed for divorce from her actor-husband, CHARLIE SHEEN, New York's "Page Six" Reporter PAULA FROELICH has some leads on what might have caused the couple to split.

"There were some clues that all was not well in the Sheen/Richards household," she says. "They apparently were supposed to do a Valentine's Day photo shoot for a magazine that was called off at the last minute. There have been some whispers of Charlie just kind of enjoying the nightlife recently."

According to court papers filed Wednesday, Richards, 34, is officially citing irreconcilable differences as the cause for the split. The actress is only a few months away from giving birth to their second child. They have a 1-year-old daughter, SAM, who once guest-starred on "Two and a Half Men" with her mom and dad. Denise has asked for full custody of Sam and the unborn baby.

The couple wed in June 2002, several years after playboy Charlie reportedly put his partying ways behind him. The 'Scary Movie 3' star testified at convicted madam HEIDI FLEISS' trial that he had spent more than $50,000 on Hollywood call girls.

Charlie, 39, was previously married to DONNA PEELE in 1995 but the two were divorced after just a year. "Denise was married to Charlie for almost three years, which is a lot longer than his marriage to Donna," Paula says.

Paula says that Charlie signed a prenuptial agreement with Denise that reportedly included a $4 million "cheating clause." "If Charlie cheats on Denise, she gets $4 million," she explains.

For more details from this star split, keep watching "The Insider."