Lets go further back to know whos plan it may have been. Virat didn't tell Amu he saw Manvi put medicine in his drip at hospital. He kept pretence by telling Amu he not VSA . Virat told Manvi to take him from hospital & went home with her. Based on this event. Living with Manvi was Virat idea after he discovered hospital drip medicine.
Oh yes! That adds to the second para I mentioned then. 
Intent is clear.
PS: Makes me think why he chose to disclose this to Ammu.

Its not that they are powerless right now
Remember what happened at the mela because of her amazing plans?

and also Kmtmg team gave them opportunities to try different styling's, costumes and disguises.
Feel this show will benefit these two more for upcoming acting offerings, when compared to other star cast in same show.