The thing is what Sidharth did with Sana may look wrong when they wouldn't have been friends but the point is, if Shehnaaz has not any problem ,she doesn't speak up, then no one has the right to blame Sid, Shehnaaz isn't abla Nari who can't raise her voice. And she too was wrong by throwing Chappal and slapping him. She even, was defending Madhu and told Vishal that Ye sab to chalta rehta hai.
PS I am not Shukla fan. And I don't want to argue over this. I too thought, Sid did wrong by seeing the Cilip but after watching the episode, my perspective is changed little bit.
I just kept my opinion.