Still friends?

Divergent Trilogy.
Modern day story. Christina, Tobias and Tris have always been best of friends. But soon they experience drama, friendship and... Romance? Are they going to still be friends, or fall apart? Tobias is caught up in a feud with them... And Uriah likes someone else than Marlene. There's something confusing about Tris and Christina acting weird around Tobias....*charector from Allegiant