Congrats! Most of you got it right. Yes, it is Nitin who has not cried at all so far.
For others who selected other than Nitin, let me give you instances when they have cried.
a) nikita - Has cried before when Lalit had accident caused by Esha and is in hospital.
b) Lalit - Has cried before when he is lying helpless not able to express to Kusum/Abhay that Esha is the evil person behind his accident.
c) Esha - Cries out loud when she is kicked out of the house by Abhay.
d) Aryaman - He has had enough of his cry share when his and Sakshi 's episode had taken center stage.