This is the second single from Canadian teenage singer Justin Bieber's debut album, My Time.
Bieber told MTV News that he hopes that the song's message gets out to those who need it. "I think it's important that these girls have something," he said. "So there can be one less lonely girl."
The song's music video was shot in Nashville and was directed by Roman White (the man behind Taylor Swift's VMA winning " You Belong With Me" clip).
Justin and girlfriend Selena Gomez crashed a wedding in 2011, after overhearing them playing a karaoke recording of this song. Justin posed for pictures with the surprised and excited wedding guests.
When Justin Bieber performs the song in concert, he invites one or two girls on stage to be the "lonely girl." Episode six of the singer's YouTube docuseries Seasons revealed that Justin finally got to sing the tune to his forever girl.
We learn that during their wedding reception, it came up in conversation that Hailey Bieber had never been a "One Less Lonely Girl" at one of her husband's shows. So a member of Justin's management team told her to get ready to be serenaded. "I was giddy as if it was really happening on stage," she recalled. "It was just so silly and cute."