Second mariage

By three things you can proove it :-

Hire a detective to collect proofs of his adultery,bigamy  or any illegal child of him.

If not,

Then her illegal partner has to come with proof and in open society and in court she has to accpet that she is having iilicit relationship with that man.

If not,

Then only last option left,

The man himself has to admit in the whole society and in full house court that yes Iam having illicit relationship with this lady, i have done marriage also, now Iam having a child also....

Jo ukhadna hai ukhad lo......! lolz

Thaks for your answer. 

But if he say that we are in living relationship with her.

Thaks for your answer. 

But if he say that we are in living relationship with her. due to women is not ready leave my matrimonial house.

If he says that he is having liv-in relationship with her then its proof of adultery,

now what's more you want from him.....

do you want him to show the intimate pics of private time then only you want him to acceept.

abbe bacche ki jaan loge kya.......