Sid has regretted divorcing Roshni...even before he signed those papers. He was haunted by it from the onset. But today he has understood that Simran and Kiritka were not worth the sacrifice.
I feel we will now get the old intense Sid back that dclimbed buildings for his lady love! He will go all out to win back Roshni not as a friend, but as a lover, companion and life partner.
Now is the time for Sid to revert back to his old stubborn ways because he and Roshni deserve happiness. Being the martyr for people like Simran and Kritika is far from noble.