So Ridhima got to know about the car and she got some key or yet to find the key
that says she started having her own doubts on Vansh
When Vansh asked she could have said but then again Vansh himself in the same place, he could tell her right - before starting this relationship again
So both stuck in the same way. One who wants to hide to save his love and others who wants to know the truth so prove their love is strong and the doubts were wrong.
But yes, I thought if Riansh ever get remarried it would be some dhamaka and wedding, but then again, marriage can never be the same for these two
When first married Ridhima is hiding things while Vansh wants to know, and now Vansh is hiding things, Ridhima wants to know.