I really liked how Ravi said that dialogue to Devika. Even though they both have a contrasting personalities, in this case, Ravi is shown to be more mature and understanding. Devika is unaware that there are women out there who are just as openminded as Ravi so she has decided that Ravi is a shameless person.
Ravi, on the other hand and in my opinion, is more "irritated" by Devika's innocence. This episode proved that I think. He knows that Devika always blames him for everything, yet he is aware that she is innocent, loyal and courageous. When he tried to tell her that he has affairs with women who are just as openminded as him and sometimes women are the one to take advantage of him; Devika didn't believe him. But despite being angry at her, in the heat of the moment he said, "Har koi tumhari tarah nahi hota" - meaning he is aware that Devika is not the type of person to use him.
I think the CVs are trying to show that while the characters have been busy fighting and disliking each other, on some level they are beginning to understand each others personality. I really like how the CVs are approaching this. Its kind of realistic. Usually in order to have chemistry there are a lot of falling, catching, accidental hugs, eye locks etc. While very enjoyable to watch... you can't relate it to real life. But in Kalash, along with the chemistry, you have a realistic plot line where you can see how the characters begin to recognise each others personalities.