Mischa Barton’s relationship with Rooney frontman Taylor Locke ended on September 5, just shy of their seven-month anniversary. And according to an insider, it was Mischa who pulled the plug. The couple had just returned from a nearly three-week safari and charity junket through Africa and all that togetherness seems to have been their downfall. “Mischa and Taylor’s romance worked because they spent so much time apart,” an insider tells In Touch. “He’d be on tour or she’d be working in Europe and they talked over the phone or e-mail.” The insider explains that spending 24 hours a day in close proximity with Taylor, 24, caused the 22-year-old actress to rethink her future with him. “They fought almost every day on the trip,” the insider says. “She broke up with him just a few days after they returned to LA.” “They’d only see each other for a few days at a time,” says the insider. She has a thing for musicians: She also dated Cisco Adler.

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