06/01/2010 05:12 am ET | Updated May 25, 2011

Selena Gomez & Nick Jonas SPLIT

Just as Joe Jonas is showing the world he's happily dating Demi Lovato, another Jonas brother finds himself single: Nick Jonas and his on-again, off-again girlfriend Selena Gomez have called it quits, a source confirms to PEOPLE.

Though the couple never publicly confirmed they rekindled their relationship, the source says, "They were an item, but they are no longer together."

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