Listen to Boyfriend (Girlfriend Acoustic - Originally Performed By Justin Bieber) [Piano Karaoke Version] online. Boyfriend (Girlfriend Acoustic - Originally Performed By Justin Bieber) [Piano Karaoke Version] is an English language song and is sung by Sing2Piano. Boyfriend (Girlfriend Acoustic - Originally Performed By Justin Bieber) [Piano Karaoke Version], from the album Boyfriend (Girlfriend Acoustic - Originally Performed By Justin Bieber) [Piano Karaoke Version], was released in the year 2013. The duration of the song is 3:10. Download English songs online from JioSaavn.