1) Ritwik will fall in love and when Ananya comes to know abt it she will accept it and move aside. But family won't be happy. But this option has little chance.
2)Ananya will come to know and inform his family and Ritwik will be adamant and will leave his family to be with his love . Here also there arises two options. Tat is will she accept or not? There are equal possibilities for both.
3) Ritwik will fall in love but will never gain the courage to tell it and will stretch it till marriage. On the marriage day major heartbreaks and show down happens
If all these my fav assumption is Ritwik will tell Palak and will be disowned by his family. Both will marry and will live happily. Palak will try to mend the relation btw his family and him but won't succeed.This is when she realises she has some problems(may be disease). At tat time she will make Ritwik break all ties with her by her own actions so tat he won't be left all alone if something happens to her.Ritwik will return to his family heartbroken but won't be welcomed by Rishabh who is in charge of all business after Ritwik left. VP by then has discovered some new medication which can cure Palak and he has seen her also but don't recognise as he hasn't seen her before. Slowly after many episodes Ritwik also will come to know and he will be heartbroken to see his Palak. But VP medicine will cure Palak and the whole family also will accept her now when they see her pure soul. And everything will end happily