Justin Bieber and Selena Gomez have reportedly split up several times.
TMZ reports that the couple, who have been dating for around 18 months, most recently split last week before reconciling.
A source close to the teens alleged that their relationship is currently not "solid".
A second insider claimed to The Mirror newspaper: "They might be young, but Justin and Selena's is a very adult relationship. They have had to grow up really fast because of the pressures of their careers.
"To begin with, their similar situations complemented each other, but now they seem to be drifting apart."
Neither Bieber or Gomez, nor their representatives, have responded to the break-up rumours.
