Tiger Woods, Elin Nordegren & Lindsey Vonn
Tiger Woods' cheating scandal of 2009 certainly didn't help the athlete's case of cheating in relationships. After six years of marriage to Elin Nordegren, Woods was caught having been unfaithful with over a dozen women. After losing much credibility from the scandal, Woods didn’t change his habits. Earlier this year, the pro golfer was alleged to have cheated on ex-girlfriend Lindsey Vonn.