In my point of view the way dhani cares for viplav so much and is so comfortable with him,she even acted as married woman and put mangalsutra to save his life,i mean she was ready to do anything to save his life,and this is the same dhani who follows her culture so strictly,if she can break her bounderies to save viplav's life then she loves viplav alot,dhani has special feelings for him that's why when she is with him she forgets about eveerything and is happy .After viplav said that dhani is his future wife and when she was leaving with her mother the way she keep looking at viplav,it shows she loves him so much.Dhani loves him for sure and i think she knows it now but obviously because of all this complicated soceity she don't wanna admit it and express it.