The couple met on the sets of soap opera Pavitra Rishta four years ago and last year Sushant proposed to Ankita on a dance reality show in which he was a participant.
Sushant, 27, recently visited the sets of the show DID Super Moms to promote his upcoming film Shuddh Desi Romance and was shown a video which had messages of all the prominent cast of Ekta Kapoor's 2009 TV show.
"I am proud to be your girlfriend and the kind of chemistry I share with you, I can't have that with anyone else," said Ankita, who is still a part of the hit drama.
The Kai Po Che star became emotional and was too overwhelmed to say anything after seeing the video.
Sushant was accompanied by his co-stars Parineeti Chopra and Vaani Kapoor. The episode will be aired this weekend.