The ultimate betrayal! Check out the biggest celebrity cheating bombshells through the years -- including scandals involving Kristen Stewart, Tiger Woods, Katharine McPhee and Ashton Kutcher.
Tori Spelling and Dean McDermott
Tori Spelling and Dean McDermott first fell in love while filming the TV movie Mind Over Murder in August 2005. Unfortunately, they were both married to different people at the time. Though the two have never claimed to have cheated on their spouses, the Beverly Hills 90210 alum filed for divorce from her husband Charlie Shanian in October 2005 and McDermott divorced from his wife Mary Jo Eustace in February 2006. Spelling and McDermott then eloped in Fiji three months later in May 2006.
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