Justin Bieber Sings Taylor Swift's 'I Knew You Were Trouble' Backstage!

Justin Bieber Sings Taylor Swift's 'I Knew You Were Trouble' Backstage!

Justin Bieber just covered another Taylor Swift song!

The 22-year-old singer was caught on Snapchat singing her hit “I Knew You Were Trouble” before his Nashville concert stop on Monday (June 27) with his buddy Martin Garrix.

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Justin and Taylor have a long history together as he used to date her BFF Selena Gomez. Back in May, he shared another cover video of Taylor‘s song “Teardrops on My Guitar.” Taylor famously “liked” the video on Instagram.

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Photos: Getty
Posted to: Justin Bieber, Taylor Swift, Video