Sarah Silverman and Jimmy Kimmel may have celebrated their five-year dating anniversary in February with a fake rivalry over sleeping around with Matt Damon and Ben Affleck, but no one's laughing now that they've broken up. Us magazine confirms a Vanity Fair report that the pair have called it quits with a mutual breakup.

"Jimmy and Sarah will have no further comment," both of their reps said in a statement. An unnamed source says Silverman was spotted at Hugos in West Hollywood, chatting with a male friend and visiting briefly with Jonah Hill. Jimmy was probably busy with his show, of course, but neither he nor Sarah have yet been spotted with Matt or Ben.

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