I agree, I think it is too fast. I admit there have been around 2 weeks of episodes but technically they only know eachother for 3 days
1st Day was bike ride-they don't know eachother so no attraction
2nd Day-viddhi proposes a deal to him for french clients so they now know eachother
3rd day- Birju's argument with Jassi, Viddhi and him having jalebi, shopping, him walking in on a family argument, working in the night...in that one day that have managed to like eachother to such an extent that they are imagining one another.
As much I love their storyline and backdrop of a fashion context I would have liked a gradual build up of their love story. It's obvious the biggest barrier for them would be Viddhi's family but we still have to meet Birju's family. They are already going on a date-which is needed because how else they are going to meet but i still want some flavour to their storyline, more meetings, getting to know eachother, jealousy, hero coming to save herione from a situation and so on