Guys I am thinking one more possibility for Pure Rosid. As khushi and naina planned together to take revenge of BW family, If Veeru is part of this plan, then he will tell Roli that Sid is not hers and he is going to marry naina, because of Naico,Khushi and his plan and then telling everything blah blah blah. And then Roli will escape from him and enters BW house on Sid Naico Marriage day and will prove sid innocent