I am a silent reader of this forum.. donot bash me.. this is my first post please read completely.
Mayank will sign the divorce papers and start to US, while going he calls nupur for the last time and asks her to re-think her decision. Sajan makes nupur to realise her mistake and nupur feels bad for her behaviour with mayank. Three starts to airport in sammy car. While going accident takes place and sammy may die. Nupur feels responsible for this and she forgets about mayank for that moment and stays back with gunjan. There mayank thinks nupur wonot come and lost her forever and goes to US for MBA.
After some years may be sammy returns just like kaho na pyaar movie and gunjan and new samart story starts. And on other side mayank returns from US as GM or CEO of a company where nupur is working... and so the season 2 may start...
This is just my guess... please share your thoughts