About chemistry, if CV's show many romantic scenes,then people feel naturally chemistry between any pairs. But there is one more thing I would like to add,without any romance scenes DDnVD made screen in the fire. They actually do not need any bold romantic scenes which make goosebumps to create chemistry like many other couples. Without rishbala i only liked the couple chemistry with only just screen presence together was khushi-Arnav. As per my view, other couples become famous more on their romantic scenes n become hot pairs. So may St make a good jodi with with good story with forced romantic scenes.
It is only my view n personal opinion. No bashing n offence.