Did Tiger Woods cheat on Lindsey Vonn?

The bombshell report claims the real reason Woods and Vonn broke up was because he had a fling with another woman.

READ: Tiger Woods' Ex-Mistress Warns Lindsey Vonn Of His Cheating Ways

A friend of Woods is quoted as telling DailyMail.com, "He had a relapse in the sex department. He can't help himself."

The one-night-stand reportedly took place in February around the time Woods withdrew from a tournament in California because of a bad back.

READ: Sex Addict Weighs in On Tiger Woods's Sex Addiction 

Woods supposedly confessed to Vonn. "That 'one-time slip' was enough to send Lindsey packing," DailyMail.com says.

Our calls to Woods' and Vonn's reps were not returned. 

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