Man, even this thought crossed my mind! I do think Vindhiya and Gaurav look nice together, but it's obvious he doesn't like her touching him. It's DJ, so maybe they will show something bold like this. If Gaurav really is gay, I feel bad for both parties! Also in character sketch its says Gaurav and Vindiya become good friends but Gaurav will still show no interest in her. So he's not attracted her?! Hmmmm.
But then again, it could be some other reason. Seems like all the elders know this "reason". I don't think Adi or his sister know.