VIDEO : Yes, Taylor Swift Did Work On ''This Is What You Came For'' Track

Kevork Djansezian/Getty Images Well, since the cat's out of the bag, Taylor Swift doesn't seem to find a need for " Nils Sjoberg " anymore. E! News has confirmed that the singer ditched her pseudonym for her ex-boyfriend Calvin Harris hit song "This Is What You Came For" after admitting that she was actually the one to collaborate with her former beau on the Rihanna track.