To confuse audience. 😆
Or, it could be to take revenge. By being Vansh in front of family, he will destroy Kabir and Anupriya. And by being Vihaan in front of Riddhima, he will mess with her psyche.
Woh kis ke saamne Vihaan banna chahta hai,kis ke samne Vansh banna chahta hai woh toh baad mein pata chalega 😆..abhi ke liye yeh soch ke hi mera dimaag ghumta hai
Waise,RraHel looking like college students..can they explore their college type nok jhoks and tashan... that's how they can even know each other more.. that'll be interesting to watch