Wow, you guys love Nivi and Viren so much. It's shocking. I have to admit, I was a Siddarth and Nivi fan a little, I like the first love thing they had until that Chanchal spoilt it and Divya came in between. I really wanted Nivi to marry Siddarth.
But now, I am fully against theidea of the Siddarth-Nivi reunion. It will be disgusting and completely wrong to marry your sister-in-law/Brother-in-law. It's like incest. Secondly, Siddarth and Divya have a child together. You do not get with your niece's father or your daughter's aunt. It's so wrong. Siddarth has done the deed with Divya and now it's Viren and Nivi's turn to have children (I did wish Nivi for to get pregnant before that Divya). Viren and Nivi must stay together at any cost. He is a good husband to her and I hope be becomes the best husband for her. They have yet to grow and experience so much with each other.
I feel sorry for Siddarth. Maybe, one day a nice woman with a child can enter his life so his daughter get's a brother or a sister.