Angelina Jolie and Brad Pitt insist they weren't physically intimate when they worked on "Mr. & Mrs. Smith" together in 2005, but emotional cheating can be just as painful. Jennifer Aniston was the injured party in this case. Jolie also reportedly got her claws in Billy Bob Thornton while he was dating Laura Dern.
Tiger Woods cheated mulitple times on his gorgeous wife Elin Nordegren. The pair divorced in 2010 after a huge scandal and multiple women stepped forward claiming they had sex with the golfer.