Mischa Barton ‘s alleged drug and alcohol use is reportedly the reason why Nicole Richie distanced herself from her. Nicole and Mischa used to be really close friends, but after Nicole started a family with Joel Madden, she stopped associating with Mischa because she didn’t want to be around “negative, unsafe behavior.” “In the last few years, her dark side has really come out,” says the source, who is close to both Richie and Barton
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Mischa’s Drug Use Drove Nicole Richie Away