“It was just my stupidity.” That’s how Arnold Schwarzenegger describes the affair that blew up his marriage to Maria Shriver after 25 years. In 1996, while his wife and kids were away, Arnold had an affair with the family’s longtime housekeeper, Mildred Baena - a woman who had worked in their Brentwood mansion for over 20 years. Arnold later admitted that this moment was “a major failure.” The affair was kept a secret. A year later, Mildred gave birth to Joseph, just five days after Maria had gi