"I did one of the most selfish things that I possibly could do, in hurting someone else," the country superstar says in the new issue of PEOPLE, speaking for the first time about the end of her 7-year marriage last year, following an affair with married actor Eddie Cibrian.
"I take responsibility for everything I've done. I hate that people got hurt," says Rimes. "But I don't regret the outcome."
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