Harry Styles slams Taylor Swift in 'This is Us' documentary

Harry Styles has remained impossibly private about his relationship with Taylor Swift, until now. According to the Daily Star, the singer slams his former girlfriend in a new documentary about One Direction called, "This is Us"

In the documentary Styles describes his romance with Swift, 23, as a "pain in the arse" and basically disparages every relationship he's had so far.

“I haven’t met a girl yet who I’d want to even think of getting serious with,” Styles allegedly says in the documentary. "I think I’ve been unlucky in love so far. But then, I haven’t really met ­anyone who’s made the earth move for me.”

At 19-years-old Styles is famous for dating older women. Ever since he participated in Britain's "X Factor" and became a pop star he's dated television presenter Caroline Flack, 33, singer Lily Halpern, 21, and model Cara Delevingne, 20.

Nevertheless, Styles remains optimistic about his future relationships.

“I’m longing to meet someone who really inspires me and makes me really want to spend time with them,” he said.

One Direction's "This is Us" will premiere in the United States on August 30, 2013.