Breaking up is hard to do, even for celebrities. Take a look at the notable splits of 2013.
George Clooney and Stacy Keibler: People Magazine reported in July that the couple quietly split several weeks earlier. A source told the magazine that "Stacy called it quits. She wants to have children and a family someday. She knows where George stands on that." Clooney and Keibler dated for about two years.