Newlyweds Nicole Kidman and Keith Urban are facing a challenge early in their marriage. Country star Urban checked himself into rehab on Thursday for a drug addiction. "I deeply regret the hurt this has caused Nicole and the ones that love and support me," Urban said in a statement. "One can never let one's guard down on recovery and I'm afraid that I have." Urban has been to rehab before. "With the strength and unwavering support I am blessed to have from my wife, family and friends, I am determined and resolved to a positive outcome." Immediate appearances that were scheduled on the singer's tour have been postponed.
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