Canadian pop star Justin Bieber and Selena Gomez have rekindled their romance and were pictured napping together on a sofa.

In the photo taken by Bieber's friend and producer Jason 'Poo Bear' Boyd, a woman is seen next to the on-and-off couple, holding her finger to her lips as the Baby singer rested his head on Gomez's shoulder, with their eyes closed.

"Justinbieber – somebody's sleeping ! HB!" the caption on the photo read.

The picture was apparently taken when the two were in a recording studio on 18 June.

It was previously reported that the former Disney star used studio time as a "therapy."

"Her in the studio is a bit of therapy to get away from everything, it's a place where she can unwind from it all. But an album isn't something that is being worked on right now, just individual songs," a source close to her told Hollywood Life.

After multiple break-ups, the 21-year-old Come And Get It singer and Bieber have decided to make things work out.

"Justin has told her that he's changing his ways and she totally supports him and feels like he's finally grown out of that bad boy phase," another insider told the website.

"So they are both in really healthy and positive place right now. And what's really been making a difference is that they have both praying together and you can tell what an impact this has been making on the both of them, especially Justin," the insider added.