9. Harry Styles
Poor Taylor Swift. The singer is once again listed on the losing side of a cheating scandal, this one involving One Direction's Harry Styles. The boy band lothario is said to have doggedly pursued Swift for months, only to cheat on her once he snagged her heart. Styles was forced to fess up when images of him locking lips with a young female friend hit the tabloids. {relatedarticles}Though Swift herself hasn't confirmed reports of Styles' less-than-dreamy behavior, she authorized a friend to dish on the details. The source says Swift learned of Styles' indiscretions while he was touring in Australia. Fans likely can expect to hear the full story on Swift's next hit record.