Zac Efron: February 2012 – March 2012
The former Disney heartthrob Zac Efron has a history of toying with our hearts, and it appears he did the same with Taylor's. It's rumored that the two dated for several weeks while promoting a film they worked on together.
Despite these persistent rumors, both Taylor Swift and Zac Efron denied the existence of a romantic relationship. They went to great lengths to quash the speculation, even co-writing a song on "The Ellen DeGeneres Show" to humorously dispel the rumors, all while parodying "Pumped Up Kicks." It seems we'll have to take their word for it.