the reason behind this is simply dev's class where he originally belongs
yes i am not saying that other class people don't do like that but the class where he belongs over there men feel women are lower than them but here he is getting attracted to a girl who is so reputed in her education that even a top business tycoon like him HAS to respect her ,yes he will like her in future as the story demands that but like saying Miss Bose instead of Dr. Bose proves that ok we might find it sweet,romantic,getting informal but somewhere in his mind he wishes not to used the word "Dr." as a mark of respect because then it would be impossible for him to have her in his life.
Current case it was sona's mistake you mind your own business na but then i also feel in a way she is doing right because he has actually interfered a lot in her personal life.
He terminated her from a job without her mistake ,he made sure she doesn't get job elsewhere,he broke her marriage with kushal (once he tried,second he manipulated)
so itna to hak uska banta hai
just because he is a man he SHOULD NOT have a control on any girl's life.
So i am actually liking this interfering sona
let dev get a taste of his own medicine!😆😉