Arnold Schwarzenegger successfully hid an affair and an illegitimate child for 13 years, so why did he decide to finally come clean? Was it a change of heart? Was it a buildup of intense guilt? No, it was the classic scenario: the wife found out about it. Did no one learn anything from the Tiger Woods debacle?

RadarOnline and Star report that Maria Shriver was suspicious of Arnold and the housekeeper, Mildred Baena, with whom he fathered a child. Under Shriver’s questioning, Baena broke and admitted to the affair. Arnold finally admitted to his wrongdoing when his wife confronted him.

Shriver has hired a top divorce lawyer, Laura Wasser, though officially no divorce proceedings have been filed. Shriver and Schwarzenegger have been married for 25 years.