Mildred Baena, Arnold Schwarzenegger’s one-time mistress, filed for divorce from her husband in 2008, and in the exclusive documents obtained by RadarOnline.com, she said she did NOT have any children with her husband!

The man, Rogelio de Jesus Baena, is listed as her son’s father on the child’s birth certificate, but the child’s real father is Arnold Schwarzenegger.

In a surprising twist, the divorce documents say that the couple had NO children together.

Mildred — who’s also known as Patty — cited irreconcilable differences as the reason of the split.

The couple was married for nine years, but according to the documents, they separated in 1997.  Their divorce has not been finalized.

As RadarOnline.com previously reported, Mildred Baena threatened to go public with sordid details of her illicit affair with Schwarzenegger — all because the Governator terminated her employment.

A blockbuster RadarOnline.com and Star Magazine joint investigation has uncovered the real reason behind the former California’s governor’s admission that he fathered a son out of wedlock — it was because Schwarzenegger fired his mistress from her job as a housekeeper in a desperate attempt to save his marriage to wife Maria Shriver.

Keep checking RadarOnline.com for more breaking news on the Arnold Schwarzenegger scandal.