After Ranbir-Katrina, Alia Bhatt & Sidharth Malhotra Heading For A Break-up?

We all know that Alia Bhatt is dating Sidharth Malhotra but rumour has it that the the two had a huge fight and are not talking to each other. This news came out when Sidharth left Aarti Shetty's party without Alia.Not so