"You made me comprehend how special I am through leaving me alone otherwise that I still cannot be alone, having especially you in my mind."
So, Riddhima and Vansh both had met ecah othe for anybody else, as we can come to be aware of this from the final statements made by each.
Both faced each other to face everything as a promise made to their loved ones and both of their respective lovers were fake and they came to know this when they both knew that they had no other way instead of fulfilling their promises.
Those weren't the promises they made to each other but they were the promises by which they both were there which made them to meet each other and then all that happened.
Maybe the preferences are that they have to provide for whom they have been striving and to continue their relationship with a new segment with every difference after giving up.
