Taylor finally  reveals the real reason why she and her One Direction ex split…

Taylor Swift has been less than kind to her ex-boyfriend Harry Styles in her song lyrics and live performances, but the 23-year-old singer has finally opened up about the details behind her dramatic split from Harry and says he was the one at fault !!!

Although Taylor wouldn’t divulge the details of her relationship with Harry in the April issue of Vanity Fair, she authorized a source close to her to spill her relationship secrets…

“Harry was all, like, ‘You’re amazing, I want to be with you. I want to do this,” the source tells the magazine. But soon enough, she couldn’t handle his constant partying, and couldn’t trust him.

“He disappeared one night and after that it was like he just didn’t want to keep going,” the source tells Vanity Fair.

Finally, their drama came to a head when a friend told Taylor there was a pic Harry kissing another girl online.

Even though Harry insisted she was just a friend and it was a friendly kiss goodbye, Taylor wasn’t buying it when she looked at the pics herself…

The source says Harry and the  girl were “making out like with their hands all up in each other’s hair.”

Taylor “felt like he was looking at every girl,” the source tells the magazine.