Taylor Swift and Calvin Harris Split

— -- Taylor Swift and Calvin Harris have split, sources confirm to ABC News.

The couple had been dating for more than a year.

According to People magazine, there was no specific incident that prompted the breakup.

"There was no drama," a source told the magazine. "Things just don't work out sometimes."

Swift, 26, and Harris, 32, celebrated their first anniversary with a beach vacation in March. One month later, she opened up about her relationship to Vogue.

“I’m just taking things as they come,” she said. “I’m in a magical relationship right now. And of course, I want it to be ours and low-key ... This is the one thing that’s been mine about my personal life.”

It has been a tough few weeks for Harris, whose real name is Adam Wiles. Late last month, he was in car accident and was briefly hospitalized for minor injuries.