Vansh was giving Riddhima's love a different level of importance that she wasn't valuing because she thinks that all are same.
That was now frequent for her and she was annoyed by the reality that why this is common only to her. Why everyone wants her? ~Riddhima
She may have accidentally fallen in love with one of them and now she doesn't desire to love once more due to the fact she thinks that love is a mistake.
I already told you in what case we think about love a mistake. She is just careful, but Vansh was also true from his side.
If she is much doubtful about him, then she can virtually take a test of him but she is not because she isn't interested.
She can check him to actually take a look at this genuine love that he is showing to her, and by asking her to believe him to see the new magics that will then come in her life.
