I think Dutta doent love/like Supriya as his future wife. Everyone is saying that Dutta chose Supriya but I have never seen Dutta talking talking to Supriya.
Even in the breakfast table, Dutta was not even looking at Supriya even when she was sitting in front of him. I understand his family was also sitting with him but if it really a marriage of choice for Dutta, he would have been engaged in eyelock session with Supriya or atleast would have been stealing glances.But nothing happened.
When Aai Saheb asked Supriya's father to let her stay with them for some more days so that she & Dutta can talk to each other, Dutta looked constipated as if he is a kid and someone stole his toy car.
Later Aai Saheb told Supriya that Dutta didnt tell them that he liked Supriya, just that he was staring at her in some marriage function, they assumed that he likes her.
Now I am getting an indication that maybe Dutta has a friend who is the boyfriend of Supriya and Supriya's father didnt approve maybe because that guy is not of same caste.Dutta might have looked at Supriya in the marriage function only because she is his friend's girlfriend which his family incorrectly interpreted.
When Dutta had realized that his Aai brought the marriage proposal for Supriya,it was too late to say no and maybe he remained silent just to help his friend & Supriya.