Maria Shriver is set to divorce Arnold Schwarzenegger. The 55-year-old writer - who split from her husband of 25 years after he confessed he had fathered a 14-year-old son with their former housekeeper Mildred 'Patty Baena - has reportedly told friends she will file papers to legally end their union after deciding she cannot forgive him. A close friend of Marias said: Maria absolutely will be filing for divorce. Its not a matter of if Maria will file for divorce, but when. Although she had hired celebrity divorce lawyer Laura Wasser to represent her in her split from the 'Terminator actor, friends were unsure if she would go ahead with it plans because of strong Catholic beliefs. However, it has since emerged Maria - who has four children Katherine, 21, Christina, 19, Patrick, 17, and 13-year-old Christopher, with the former Governor of California - suspected Arnold of having affairs with numerous members of their household staff. Although she didnt suspect for one second that the 63-year-old star had fathered a child with Patty, she reportedly had her suspicions about other workers. A former employee said: Maria didnt suspect for one second that Patty was messing about with her husband. But there were others who she wasnt quite so sure about.Its perhaps little surprise that after suspicions were aroused, they subsequently didnt last long in employment. The estranged husband of the woman identified by some media as the mother of Arnold Schwarzeneggers out-of-wedlock son says he feels betrayed by the former governor. In an interview Rogelio Baena said he learned last week he was not the boys biological father. He says he will always regard the boy as his own. The Insider also broadcast video Tuesday of Maria Shriver praising Mildred Baena at a 2001 celebration for one of Baenas relatives. Shriver said she was proud of Baena for being a single, hard-working mother. Schwarzenegger can be heard echoing her praise, saying the housekeeper did an incredible job. Mildred Baena has been identified as the mother of Schwarzeneggers child by The New York Times and other media. Agencies