"Former California Gov. Arnold Schwarzenegger and his wife, Maria Shriver, separated after she learned he had fathered a child more than a decade ago
— before his first run for office — with a longtime member of their household staff.
Shriver moved out of the family's Brentwood mansion earlier this year, after Schwarzenegger acknowledged the paternity. The staff member worked for
the family for 20 years, retiring in January."
So this is why they got divorced. It happened years ago. He did not commit a crime, only to his family I suppose but it is not illegal to cheat.
edit on 17-5-2011 by ReadyPower because: Fixed the subject wording