If Arjun confesses to Zoya about his role in encouraging Aditya to make the prank call that night it may help Zoya to understand Aditya better. Arjun will now come clean on how Aditya wanted to shout to the world about his love for he the moment he himself realized it. How Arjun forced him to realize it.And the night he wanted to share his love with her the fiasco with her coming dunk thanks to Noor. They may even show them getting the driver to prove their point.
Arjun will reveal every moment that Aditya was trying and failing to get a moment alone with her so he could tell her his big realization. He was not being sly and pretending to be a friend while secretly in love with her. Zoya will finally come around and see the truth helped by Noor & Arjun.
I am sure this is the way the track will move forward and AdiYa marriage will take place in happy circumstances. Hopefully in a grand scale.