Yesterday there was a glimpse of his anger when Roshni was refusing to sit with him on the puja. He had a weak moment where he wanted to force her himself - physical abuse. I am sure he will be the one who will bring out his true face without anyone trying to plan and hatch to get his true face out in the open!
Roshni will be this stubborn till the very end, even though she will be angry at Sid for not telling her the truth and fight with him - where Kunal at that moment will think he won - he will never achieve her as he wants to.
She was being so possessive over a mangalsutra, and was fighting back like hell - imagine what she will do when he tries to come close to her inappropriately or force her to do work or something like that. At that moment of her resistance his truth will be out in front of her.