What even happened between Niti and Parth over the years?

It was very well publicized when they were shooting season 1 Kaisi Yeh Yaarian that they did not see eye to eye and hated each other. Does anyone actually know how they shot such romantic scenes with each other when they didn’t like each other?

Anyways, over time they have started to get along and have a good working relationship now. Some even say that he begun to have a thing for her post season 3 though I’d feel like that’s bs.

But does anyone have any insight, insider information?

(Niti Taylor Parth Samthaan)