Honestly I do not see Suraiya and Zubair being suceessful in creating a rift between these two, you cannot build such a bond between two people who have showed such immense faith in each other just to shatter it in an instant. For Zain to question Aaliya's character after he himself told her that it would be wrong would go against his character. Those lines were for a reason and I can't see him ever turning his back on her
Zain and Aaliya are the best written couple I've ever watched, their love is pure and selfless. They are incomplete without each other and soulmates :)
*Edited to add* I wrote this on the second page, decided why not make it a part of the main post.
I love the fact Aaliya was shown coming closer to Zain instead of the typical female lead who shies away while the husband comes nearer. It is just another thing that sets ZaYa apart from the rest