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Ashley Greene and Joe Jonas split

Ashley Greene poses with Joe Jonas in front of Space Mountain at the Magic Kingdom on Dec. 29, 2010, in Lake Buena Vista, Fla. Disney/Getty

(CBS) Joe Jonas is going solo.

The Jonas Brothers singer, 21, and "Twilight" actress Ashley Greene, 24, have ended their relationship.

Pictures: Celebrity splits
Pictures: Ashley Greene
Pictures: Jonas Brothers

Two sources confirmed the breakup to Us magazine on Thursday.

"They broke up shortly before her birthday, then got back together" one source said, while the other added, "Joe wasn't that into it."

The New York Post reports that the couple broke up weeks ago, and that it was "mutual and amicable."

The paper's source added that the pair drifted apart because of their work schedules.

Jonas and Greene began dating last summer. Before Greene, Jonas dated singer Taylor Swift and actress Camilla Belle.

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