Songfacts®:

• This sexy R&B track was the second promotional single from Justin Bieber's #MusicMondays series, a 10-week drive in which he unveiled a new tune every Sunday at midnight. The song was released on October 14, 2013.
• Justin explained the background to the track: "The lyrics of this song are pretty self explanatory," he said, "when you fall in love with someone, that someone can make you feel whole."
  
  "I feel like anyone who has been in love knows what I mean," he added. "The song conveys that being in love is one of the greatest feelings on earth. Love is all that matters. But the void you feel when love goes away is gut-wrenching."
  
  Justin concluded: "I worked so heard on this song in the studio - trying to put that feeling into music was extremely important to me. I'm happy to share it with you."
• The song was produced by Philadelphia producer Diplo, who as well as heading his own dancehall project, Major Lazer, has also provided the soundscape for a succession of pop hits such as Usher's "Climax" and Chris Brown's "Look At Me Now."
  
  Whilst we're on the subject of the Philly producer, Diplo obviously isn't his real name. He was born Thomas Wesley Pentz and his moniker, short for Diplodocus, derives from his childhood fascination with dinosaurs.
• The songs in Justin's Music Mondays series got a positive reaction. The Canadian star's manager Scooter Braun told Billboard magazine: "He's so incredibly grateful to see the reaction from people to this music. 'All That Matters' is a very important song to him on a personal level, and to see people react to it like this - to have producers like Benny Blanco call me and say, 'I think this is one of the best songs, if not the best song, he's ever written' - that means a tremendous amount to him."
• The song's raunchy Colin Tilley directed official music video finds Bieber getting up close and personal with a sultry seductress. The comely blonde is played by the American model Cailin Russo, who became one of the most reblogged faces on the net after her Tony Kelly shoot for American Apparel.