Susan Sarandon and Tim Robbins Break Up

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Most celebrity break-ups aren't exactly shocking. We scarcely raised an eyebrow when Brody Jenner and Jayde Nicole called it quits this week.

But the following news of a split has taken us by surprise:

Timberlake and Biel Photo

"Actress Susan Sarandon and her partner of 23 years, actor Tim Robbins have announced that they separated over the summer," the actress' rep said in a statement. "No further comments will be made."

The couple met on the set of Bull Durham and never married; but they have two sons together, Jack, 20, and Miles, 17.

Well-known political activitises, Sarandon and Robbins are also multiple-time Oscar nominees.

There's no truth to the rumor that the relationship ended after she took a golf club to his SUV.