According to Indian law, he has NO grounds to file for divorce; his ONLY bet is if he asked Anandi to file for divorce under the grounds of adultery.
Divorce in America is groundless, you don't HAVE to claim anything specific like desertion or adultery, you can cite incompatibility (it's called a no fault divorce, I am a law student in the USA) and be done with your ex (though each state in the USA has different rules for how long it takes for it to be final).
But since countries like America have "no fault" divorce, the divorce rate is over 50%.
Jagya is eating his cake and keeping it too; he is extremely manipulative and completely untrustworthy.
I am almost bored of writing about how morally corrupt Jagya's character has become.
I don't want the storyline to RUIN Gauri's character anymore; WAKE UP, GIRLFRIEND.
You have NO FUTURE -as a couple- in India (even in an urban cosmo-Bombay) with an already married man. You can "play" house but you have no rights and god forbid, you have children, they are illegitimate and they have no rights.
Gauri, you deserve so much better than a 2nd hand life as the souten.
If he really loves you, TEST his lying ass and tell him to FIGURE out how to divorce Anandi and then get remarried again (your latest marriage is a crime, there is no resinstantment of that).
But for god's sake, don't throw your entire integrity as a human being in the gutter, you will only face a lifetime of kyon kyon kyon.
You are a knockout, intelligent, and super fun --remember FUN? If you choose this path of being his souten it won't be Anandi's fault, Jagya's fault, kismet's fault, child marriage's fault, love's fault ---from here on, baby it's your OWN mistake, and a terrible one.
And then when you wonder kyon kyon kyon.
The answer will only be you you you.