After a 25-year marriage as one of the nation's leading power couples in Hollywood and politics, Arnold Schwarzenegger and Maria Shriver have split up, they say in a joint statement. “This has been a time of great personal and professional transition for each of us," they say. "After a great deal of thought, reflection, discussion, and prayer, we came to this decision together. "At this time, we are living apart, while we work on the future of our relationship," they continue. "We are continuing to parent our four children together. They are the light and the center of both of our lives.