In August 2009 , country pop singer Taylor Swift used Bieber 's " One Time " as background music and music that she and her friends were dancing to in a tour video diary that she posted on her official YouTube account . In response to Swift using his song , Bieber posted an acoustic rendition of the then never-before heard " Favorite Girl " on his YouTube . When asked about his learning of Swift using his song , Bieber stated , " It was really funny because I heard about it from a fan . I watched it and it was hilarious ! " Bieber and Swift then met in person at the 2009 MTV Video Music Awards , and she later invited him to be a special guest on her Fearless Tour when she returned to the United Kingdom
2009 MTV Video Music Awards
2009 MTV Video Music Awards
Favorite Girl