The couple split late last year (12), but rumours that the relationship is back on emerged last month (Mar13) when the Baby hitmaker paid a visit to Gomez's Los Angeles property during a break from his European concert commitments.
Gomez has now further fuelled the gossip by travelling to Oslo to support Bieber, who performed in the city on Thursday (18Apr13) - and the pair reportedly stunned onlookers with a public display of affection.
A source tells People.com, "They were holding hands, hugging and they kissed on the lips. They looked really in love, like no fights ever happened before. It definitely looked like they were back together."