Asya asked a question in last thread, I have the same question. Viren went to ask for Nivi's hand before knowing the truth about Nivi and Sid, why?
I know Navz said he got a clue of Nivi and Sid during Jagarata outburst of Sid, but Sid didn't say anything which implies that Sid was in love with Nivi, Sid just told Sharmila that this your personal matter you can resolve at any time but right now we are taking Mata's name so no need to create a scene.
If Sid didn't try to call off a wedding Viren wasn't going to marry Nivi at that point. NivRen got married because Sid threaten to call off his wedding.
And whatever he did so far teaching her to smile, not to cry all the time, giving her moral support, being really patient with her, all were fake? why has to go so much trouble just to make Sid suffer, he could have done something really bad with business and put all blame on Sid. Sid would have lost all his family's trust that way too. Why he involved Nivi into it?
I am sorry if I am not making any sense or making you all upset. I am just trying get this stupid frustration out.