This is again my opinion of Satvik. It has nothing to do with Guhas.
If Satvik is Satvik, not DK, then he is obviously greater than an Idiot! Worst than that. He claims he is impersonating DK because Gargi and Vedant will pay him a hefty sum which would be more than enough for Aroh's treatment. He knows it is wrong but he has agreed to do it. This maa baap ki mamta bilkul paagal hoti hai. Sometimes they forget what's right and what' wrong. I know of many parents who close one eye to their children's misbehaviour.
Anyway, Satvik is impersonating DK. what he is doing is wrong. He is cheating everyone especially Disha. That is a cheap and illegal way of finding money. That money is paap ka paisa. Now he is no different from Gargi and Vedant. He did not think (thoroughly) about the consequences if he is caught. May end up behind bars. What will happen to Maheka and Aroh?
He wants to use that money for Aroh's treatment. Lucky me, I am not Aroh. I would rather die than use that money for my treatment. I believe in Jiyo, ser utha ker, Mar ro ser utha ker". Has he forgotten what is self respect…what is dignity? Even poor people living on the streets, have dignity.
He is also hurting Maheka. In Indian customs, husband is considered the "superior" spouse. Wives fast, pray, puja for their well being etc. when woman can endure so much for husbands, why do husbands hurt their wives' feelings?
No offence to any man: "Mar don ki fitrat kutte jaisi ho ti hai". This is Salman Khan's dialogue. I am not sure but I think it is in Biwi No 1.
My advice to Satvik.
Please tell Disha the truth. Don't play with her. She has been hurt many times. Have mercy on her. If you don't, you will definitely regret:
Hate is something I feel everyday
Hate is something that gets in the way
As I look around, all dazed and confused
I see everything I tattered, worn and abused
Disha's reaction to Satvik's real identity:
I hate you so much
For what you have done
These feelings I feel
Can never be undone
My life is in such a mess
Each day I hope and wish I'd die
To free me of this pain
I sit night by night in my corner and cry