Till now we know tat both are in denial.
1) Ritwik won't be able to control more coz of the memories video she had planned for his family.He knows she is genuine and caring. He will have a tough time fighting his emotions while dancing with Ananya infront of Palak.Palak is sad and disappointed and goes from there. There she meets Aman or Setu with whom she will have a heart to heart conversation and she will confess also tat she loves Rickey more than anything. This will be heard by Ritwik who will be happy as well as sad.Palak may also say she won't be attending the wedding since she can't see her love going away. This will be the much needed first trigger for Ritwik.Rickey may also get advice from Mamta tat being in a loveless marriage is like a curse. As marriage progresses all the moment spent with her will be flashing unfront if him along with her confessing her love. Mamtas words of the loveless marriage also echoes in his head . He doesn't want Ananya to suffer for her whole life.So he may call off the wedding.And after tat he may confess to his family about Palk but nobody listens and VP even warns him of the after effects.Still he leaves the home to be with Palak. After reaching Palak house he will tell her what all happened but she won't agree for marriage suddenly. Since he has no place to live her father may allow him to stay and after many days and countless efforts from Rickey she will marry him.They May go to Noons house but they are not welcomed there and VP will again lose the chance of meeting Palak.Only then the future plot which I wrote will come true.
2) In the second idea of how their marriage is going to happen is same as above .Only difference is tat instead of Palk pouring her out to Setu it will be directly towards Ritwik.After watching she is upset with his dance with Ananya he will go behind her and confront her. At tat time she will blurt out. Ritwik will also confess his feelings but Palak will stop him from stopping the wedding coz it will be very unfair towards Ananya and she doesn't want to hurt her. It will be at this juncture Ritwik gets advice from Mamta about how difficult it is to stay in a loveless marriage. This will give him the reason to call off wedding coz he doesn't want Ananya to suffer coz of him. After this the plot same as first.
I like the second plot coz I want direct confrontation between the leads coz then only we will get to see overflowing sparks and passion .