Are Sidharth-Alia in live-in-relationship?

Bollywood's dashing hero Sidharth Malhotra was seen apparently spending most of his time at rumoured girlfriend Alia Bhatt's house these days. Though they are lovely on screen couple but Sidharth's often visit at Alia house raises many questions? People were forced to think that are they living in live in relationship? After their New Year's U.S. holiday, rumours are on its height that they are dating each other. Now we hear that Sid, apart from regularly hanging out with his rumoured ladylove, stays at her house off and on. A source says, “Alia and Sidharth have been spotted together on many occasions and though they speak highly of each other, they have never admitted to being in a relationship. Now, it seems they have gotten really serious and he stays at her house on most days.”