If a man felt bad about cheating on his wife after getting caught cheating he stopped looking and talking at mistress but 4 mths later u catch him looking at her more and more whats that mean?

It means that he has fallen in love again with the woman.But something I want to know:If the married man felt so bad and angry when his mistress cheated him,could he imagine the situation when his wife would know that HE CHEATED on him.He must be very ashamed of himself.