Mischa Barton's bad luck with rock star boyfriends has continued - she has reportedly split from Rooney frontman Taylor Locke.The actress, who previously dated Cisco Adler, ended her six-month romance with Locke on Friday after a three-week safari trip in Africa with the singer, according to America's In Touch Weekly magazine.A source tells the publication, "Mischa and Taylor's romance worked because they spent so much time apart. He'd be on tour or she'd be working in Europe and they talked over the phone or e-mail."They fought almost every day on the trip and she broke up with him just a few days after they returned to L.A."

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