Taylor Swift teams up with Zayn Malik for Fifty Shades duet I Don't Wanna Live Forever

Taylor Swift and Zayn Malik have dropped a surprise duet single from the Fifty Shades Darkersoundtrack.

Swift and the former One Direction singer both shared clips of I Don't Wanna Live Foreveron Twitter late Thursday.

The full song was made available on iTunes on Friday.

I Don't Wanna Live Foreverwas written by Swift, Sam Dew and Fun's Jack Antonoff. Antonoff also produced the track.

Antonoff co-wrote three songs with Swift for her smash album 1989,including Out of the Woods.

Fifty Shades Darker, a second film based on the surprise hit book series, hits movie theatres in February 2017.