MUMBAI: Justin Bieber's new song ‘Perfect Together’ has surfaced online.

The leak features Bieber singing about how he and his girlfriend, whom lots of fans assume is singer Selena Gomez, are perfect for each other, although their relationship could sometimes feel wrong, reports aceshowbiz.com.

There is still no word if ‘Perfect Together’ is an old demo or a new song planned for the ‘Baby’ hitmakers's new album, which he has been working on in the past few months.

No official release date for the project has been set yet.

Meanwhile, the 21-year old singer has been enjoying the success of ‘Where Are U Now’, his collaboration with Jack U, also known as Diplo, and Skrillex, off the EDM duo's album.

The song has peaked at number eight on Billboard Hot 100.