Boy side affected by girl's vaginusmus condition. After 3.5 years needs a clear divorce.

This is for my friend. The boy never had any consummation with his wife since she wasnt interested in sexual intimacy. Since he is hopeful, he held on and they had a decent relationship emotionally for 4.5 years. Wife did not husband to tell inlaws/parents. In between, counselling for vaginusmus was undertaken due to which there was no physical result. Aftwr 4.5 years after husband ran out of patience, he informed his elders and inlaws. Wife left to her hone and inlaws state that their daughter is perfectly healthy and is ignoring the psychological block. By now, the boy has lost the love for his wife since their intimacy frequencies are different. He and wife were living in Hyderabad and the marriage took place in tuticorin. Under tamil nadu registration of marriage act, 2008. Boy has filed null and void since no consummation. Girls side isnt agreeing rather has filed a DV case in Madurai (her native) asking for 1 crore compensation and the case is against boy and his parents. Advice for boy to move fwd?