During that bus accident asad and ayan saw a girl with A shaped ring in the hospital. I think that girl is rajni shukla.
I guess that this vikram is farhan. This is a plan by imraan, farhan, nikhat, and humeira to make aayan realize his love. I felt tht this vikram resembles imraan. If farhan spoiler is true, then when somehow zoya comes to see this vikram then she will unfold this(coz in farhan spoiler it is said tht farhan is zoya's friend)