Third force is Nishi. They are getting divorced because of Nishi. What I am guessing is maybe Nishi threatens them that if they don’t get divorced, she will cause harm to Naren and since she has already tried to kill Naren before, they will get scared... and they decide it’s best to part ways 🤷🏻♀️
It’s beyond stupid whatever the reason is for divorce.
And they have just signed the divorce papers, the divorce hasn’t been finalized yet.