This is today's generation where people have live in relationships even in India. So what's the big deal about the deed.
He is hot, they both are single and even though Radhi has good values, she is a from today's generation where people are open minded about physical intimacy. She felt the passion and went for it. We see and accept that in Hollywood so what's the big deal.
But for traditional Indian audience to accept it, the makers should have showed that Radhi was in love too. That was everyone would have been OK with it. Traditional or modern.
I do feel that it was not Rey who leaked it, it must be Mayank. And Rey ke naam ka bill fatega.