Whoa, whoa, whoa. Where did our little One Direction go? On their new song, "Story of My Life," the boys sound all grown up on the guitar-heavy track, singing about unrequited love and repeated disappointments. Let's just say it's a far cry from "Kiss You."

Niall Horan recently opened up about the band's new single, which was written by Jamie Scott, half of the London-based indie pop duo Graffiti6. "[Scott] has written a lot with us on this album [Midnight Memories]," Horan told Capital FM.

"We were in Nottingham on tour when we were touring the U.K. back in February and March and we just came into a room one day and he was like, 'I've got this song that I've written and I want to play you'. And we just fell in love with it the second we heard it," he continued. "It's a very passionate song."

Listen to One Direction's new single, "Story of My Life," above. The album drops November 25.