Exteme love or extreme hate...nothing in between..that's Pushkar..

Damini has diagnosed it as borderline personality disorder..which clearly explains his deeds...

Extreme love or extreme hate...nothing in between..

This explains 

why he tried to hide his bad side from vidhita initially as he was expecting normal relationship with her.

Extreme care..he carried her in his arms when she was in pain to the home..he was not able to see her in slight pain

His high expectations from his life partner

All his sadistic acts..

Extreme hate for Vidhi.

It will be interesting to see how other family members are going to deal with Pushkar as his mental illness is revealed to Rajshree