CBS News is reporting that it was as recently as this past weekend that Arnold Schwarzenegger and Maria Shriver were seen together celebrating the graduation of their nephew. Even though they were together and smiling, Shriver wasn't wearing her wedding ring.

The Editor in Chief Sharon Waxman said They have been leading rather separate lives since Schwarzenegger's term as California governor ended. What has emerged is that Maria has chosen to leave their Brentwood [California] home.

According to CBS News, after Schwarzenegger's term as Governor came to an end, the two were both focused on their careers. He wanted to return to his film career. Shriver has also been focused on her career as an editor at Oprah Winfrey's magazine and is considering her future career plans.

After 25 years of marriage, Arnold Schwarzenegger and Maria Shriver have split up, and released a joint statement.

This has been a time of great personal and professional transition for each of us. After a great deal of thought, reflection, discussion, and prayer, we came to this decision together, reads the statement. At this time, we are living apart, while we work on the future of our relationship. We are continuing to parent our four children together. They are the light at the center of both of our lives.

According to TMZ, Schwarzenegger and Shriver met in 1977 when Tom Brokaw introduced them at a charity event. They married in 1986.

He was an Austrian-born bodybuilder turned action movie star who later became a Republican California governor. His road toward politics hasn't always been easy. In 2003, during his campaign, there were allegations against Schwarzenegger that he had a history of groping women. During that time, Shriver strongly defended her husband. Schwarzenegger has recently announced his interest in returning to the movie industry. There are rumors circulating he'll return to a role in another Terminator film.

Shriver is a television journalist and member of the Kennedy family. The couple have four children ages 14, 18, 20, and 21.

In their statement they added, We consider this a private matter and neither we nor any of our friends or family will have further comment.