Shriver is a relative of the Kennedy political family and Schwarzenegger was a two-term Governor of the Golden State.
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Since Schwarzenegger left office, it had seemed as though the two were living separate lives. Shriver has worked on her women's empowerment website, guest edited an issue of Oprah Winfrey's magazine and promoted causes near to her heart, such as Alzheimer's research. She struggled with the death of her father, Sargent Shriver, in January, and took her son Patrick and some of his friends on an East Coast college tour in April.
Shriver, 55, spoke openly about the uncertainty she felt about moving on to the next phase of her life.
"It is so stressful to not know what you're doing next," Shriver said in a March 28 YouTube video to supporters. Though there was no intimation of a split, Shriver appeared without her wedding ring. "I'd like to hear from other people in transition," Shriver said. "How did you get through it? What were three things that enabled you to get through your transition?"
The former governor, 63, told a Times reporter in April that he yearned for a show business comeback. It was later announced that Schwarzenegger had signed on to star in three films, including another installment in the "Terminator" series.
There hasn't been any word of an affair by either party-- it is still unclear for the immediate reasons for the divorce.