Arnold Schwarzenegger, Maria Shriver

Think a marital reunion's on the horizon? Think again.

Former California Governor Arnold Schwarzenegger and wife Maria Shriver recently endured a much-publicized separation after the Hollywood heavyweight came clean about an affair with a household employee which resulted in a lovechild. Pictures just released of the estranged couple, however, show them driving with their sons to a lunch outing. But sources say the momentary collaboration only took place as a way to celebrate Schwarzenegger's 64th birthday.