Yash is a cheater

As many of us believe Yash can be innocent due 2 flashbacks of Zoya were he is shown very lovely dovey. Thou director had confirmed about d affair but with everyone flashback I get confirmed Yash was 100% with Pooja. I don't know why but I feel Yash was some shady guy . Now where I see luv b)w Yash & Zoya in flashbacks it more like yash taking care of Zoya , yrs Zoya Yash don't share great luv , thou Zoya thinks do but it's not true . Yash has many reasons 2 betray Zoya. If cvs whitewash Yash then forget Zoya falling 4 ADI coz she will consider it as betrayal 2 yash's memories, if Zoya has 2 comeout of yash delusional world then Yash has 2 be cheater.

I want to know why Yash betrayed Zoya.