Kunal already is suffering for the way he chose, okay he fell in love with Nandini but the route both chose led to this. He is helpless seeing his daughter miss her mama yet can't do anything about it, he still loves Nandini and misses her but there's nothing he can do but hold himself strong in front of their daughter. Kunal already is facing punishment for doubting Maulis pregnancy, Mishti stayed without a father and Pari is staying without a mother. That in a way is the biggest punishment for Kunal in my opinion. Also, Nandini may not be there anymore but she is a very much important part of the story and she will be remembered / recalled through Pari as that's her daughter. The show can't eliminate an important element, and show makers already proved its true love of KuNan nothing we say can change that. I feel the ending will be quite a sad one..got a feeling Kunal will die eventually..although no I don't want that Pari loves her dad so they should stay together while Mauli Ishaan Mishti stay together.