Taylor Swift shared with Vanity Fair that the reason she dumped One Direction's Harry Styles was because he was a cheater. Swift says he pursued her for months and when they finally started dating he was basically looking at every other girl that walked by. The article concludes that the cheating in conjunction with Styles' notorious partying allegedly proved to be too ridiculous for Taylor as he disappeared one night and after that [she] just didn’t want to keep going. The pair went their separate ways in January 2013.