Very late but I think not making their relationship official is the best thing to do as of now, you can call me old school but nazar is real, many happy and mad in love couples have broken up, Private until marriage is the best thing to do, KD knows how this industry functions more than Alice that's why he is always lowkey about their relationship. Many unwanted things comes by announcing the relationship especially when there is group of people (with solid PR) who want to defame you.
I think Kdice dating was never a reason for the instant popularity of Shivi, it was the way both the characters were written and the professionalism of both the actors who got into the skin of Shiva and Raavi, there chemistry caught everyone's eyes long before they became close friends.
Quite a few people who had seen og, were looking for Shivi without the mention of actors and both Alice and Kanwar matched up to it, in terms of their acting.
Dating or no dating, they are a hit pair. And not because of the personal relation but due to their acting skills and hardwork