Mischa Barton, Guitarist Boyfriend Split

Mischa Barton is back on the market.

The 22-year-old actress split with Rooney guitarist Taylor Locke, a rep for the band confirmed to People magazine.

"They broke up recently," a source told the magazine. "It just didn't work out."

Barton and Locke have been together since last winter and since then she had been spotted at his band's shows — most recently at an August gig in Hollywood, People reported.

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