Fantasy அவன், அவள், புருஷன் (Completed - நிறைவு)

[vishuvanathan]

Without knowing his real weakness, mohan cannot even think about becoming a cuck. 
Bhavani is always acting during the love making with him like she is very satisfied.
He still think he is satisfying his wife and she is happy. 
Only when bhavani shows the displeasure, he will understand his weakness.

Its pretty evident that author is trying to safeguard bhavani, to make mohan happy, so that she does not get separated from her husband after the affair is known.  Mohan can forgive her for giving all sexual happiness to him and agree that only he has been irresponsible by not giving anything in return. Therefore all are due to his mistake. ;)