Katharine McPhee Involved in Cheating Scandal; What Other Celebrities Did We Forget Cheated?

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Looks like Katharine McPhee's former show Smash was less dramatic than the American Idol alum's real life. McPhee has been spotted kissing Michael Morris, her former Smash director, on the streets of Hollywood. McPhee, who married producer Nick Cokas in 2008, has been separated from her husband for six months, according to reports. Michael Morris, however, is a married man with three children under the age of 10. Yikes!

Whatever the status of both of these marriages, one thing is clear: McPhee and Morris definitely have some explaining to do. But they're not the first couple to get involved in a cheating scandal. Obviously, you remember Tiger Woods, Jesse James, and Hugh Grant's respective illicit affairs, but do you remember these forgotten celebrity cheating scandals?

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