Justin Bieber has released a new love song titled 'All That Matters.'

The 19-year-old pop star premiered the track as part of his Music Mondays campaign today (14.10.13) and announced the release to his millions of fans - known as Beliebers - on his Twitter page.

He said: ''I'm sharing everything with you. #10weeks #MusicMondays. My #journals! #BelieveMovie . And now #AllThatMatters (sic)''

He then added: ''Take it to the TOP!! #AllThatMatters (sic),'' and added a link to the music.

Attaching a message with the track the teenage heartthrob wrote: ''The lyrics of this song are pretty self explanatory - 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. The song conveys that being in love is one of the greatest feelings on earth. Love is all that matters.''

The lyrics include the lines: ''You're all that matters to me/ Yeah yeah, ain't worry about nobody else/ If it ain't you, I ain't myself/ You make me complete/ You're all that matters to me.''

This comes a week after he premiered first song 'Heartbreaker', in which he confesses his love for ex-girlfriend Selena Gomez, whom he split from at the end of last year.