Swift, 23, kicked off the ceremony in Los Angeles with a rendition of her hit "We Are Never, Ever Getting Back Together."
"So he calls me up and he's like, 'I still love you,'" Swift sang in her faux British dialect.
"And I'm like, 'I'm sorry, I'm busy opening up the Grammys,'" Swift sang. "And we're never getting back together. Like, ever."
Swift and Styles, who just turned 19 this month, dated from October 2012 until last month.
|Additional Music Stories|
WASHINGTON, May 17 (UPI) --James Taylor will headline a concert at the White House next week, when the Library of Congress honors Carole King with the Gershwin Prize for Popular Song.
BRIDGEPORT, Conn., May 17 (UPI) --More than 20 people were injured Friday when a commuter train in Connecticut derailed and struck a train moving in the opposite direction, officials said.