Gomez 'needs to work things out' with Bieber

Selena Gomez has "unfinished business" with Justin Bieber.

But the 'Spring Breakers' star - who was spotted kissing the 19-year-old Canadian popstar in Oslo, Norway this week after flying there to meet him on tour - still isn't sure whether she wants to get back together with him, after breaking up with him in December.