The fact is Kunal is the biological father of Siddhi's children. He was never made know of the existence of the 2nd child until recently by Siddhi. No matter, what , whether what he did for the past 9 years or what, he has full rights of the child . But now the custody battle...who gets to keep him now that kunal knows,
In my opinion - He needs to do just two things. He must put aside his anger and think, why one day ago Siddhi stopped him from going and revealed everything and the next day she married some one else and took back whatever she said. Clearly even he would have figured out that there was a reason for her strange behaviour. He must know she was compelled to do something against her will. And whatever she did was for the well being of his family. This much trust he must have of her.
First he needs to know that he is still the legal husband of Siddhi for she only signed divorce paper once . ( Cvs dont insult our intelligence by showing us some Fb of siddhi signing another paper while drugged, or giving birht, or Richa having fake forged docs for we all know it did not happen and you cannot cover a blooper by showing another blooper and dont get us started on this)
He needs to file two cases
1) No choice - one against Siddhi for Bigamy ( this is his ACE CARD)
2) One against Sulekha and Abhay for stealing and raising his child , without even letting him known of his existence and making the life changing decisions by themselves as the child would be better off with them . Its child trafficking.! Theyt can argue Siddhi consented but so what. ? Kunal did not and never know of his existence.
As for the case of bigamy - this would make the custody battle more easier for KC. This is the trump card for KC. KC can woo Siddhi back later before Parichay Diwali. Should not matter for her to serve a jail term if necessary as the end result is SINAL REUNION with their two boys.
Illegally married and raising his son - No court would give custody to Abhay no matter how rich he is and a better provider than his son.
Furthermore, KC has sufficient evidence that his first son despite money shortage was well taken care by his family member and never spoilt. Infact he turned out to better than his second son who was spoilt rotten.
Also he can further argue too they diwans had him for nine years . Now to return the child who is rightfully his own
So, he does not have to badmouth Siddhi or degrade her infront of everyone. For that we want a smart Kunal , not a loser Kunal who thinks his wife had betrayed him, his son and his family. He doesnt have to say anything about that. Just file the bigamy suit and the rest of the work is done.
Overall , the fight of custody battle should be done in good faith ending in SINAL reunion. We dont want KC to wash his dirty iinen in the public.
I am also thinking of something else.. Abhay and Sulekha , can just reunite SINAL without any of this custody hassle as only more and more mus created as we know from the past how badly KC handles court cases. He won only one case and that too becos of his wife. I am not very confident about him winning cases as he uses his anger than his brains. He only does the opening statement and a couple of session well, but thereafter he usually ends up the looser.
At least this way, they can show both Mother and son have realized SINAL love for each other and tell the whole world they blackmailed Siddhi and the marriage was indeed a fake one. This way at least Abhay and Sulekha served their purposes for their characters for a good cause and we will be grateful for them reuniting SINAL at least with their sons.