Sushant, who rose to fame with daily soap "Pavitra Rishta", got emotional when he saw a video, with bytes from the cast of the show, including that from Ankita.
The actor was then surprised as he did not expect a confession of love from his long term girlfriend Ankita, which said: "I am proud to be your girlfriend and the kind of chemistry I share with you. I can't have that with anyone else."
Sushant almost had tears in his eyes and was too overwhelmed to say anything.
While Parineeti didn't hesitate to sing the title track of "Shuddh Desi Romance" with the contestants, Sushant and Vaani were enthusiastic enough to dance while she sang.
The star-studded episode will air on Saturday on Zee TV.