Is George Clooney single?

According to reports, George Clooney, 47, and his girlfriend of nearly a year, 29-year-old Sarah Larson, have ended their relationship.

"I do not comment on George's personal life," said Clooney's rep, Stan Rosenfield. But sources told In Touch Weekly and People that the two had called it quits.

"George is relieved to be single again," an anonymous source told In Touch, which was first to break the news. "He thinks Sarah is sweet and that is why it was so hard to break up with her."

The two reportedly met when Clooney was celebrating his birthday at the Green Valley Ranch in Las Vegas several years ago. Larson was a Vegas cocktail waitress and go-go dancer at the time. They started dating when Clooney returned to Vegas for the premiere of "Ocean's Thirteen" last June.

The insider told In Touch that it was their vastly different backgrounds that contributed to their decision to break up: "The truth is that they had little in common and he just doesn't want to be tied down," the source said.