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Celebrities Caught Cheating

11 of 18

Peter Cook

Supermodel Christie Brinkley’s 2008 divorce got ugly when it was revealed that her fourth husband, architect Peter Cook, had cheated on her with an 18-year-old named Diana Bianchi. —XFINITY Entertainment Staff (Photo By Steven Henry/Getty Images)

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.

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