b) A man will start keeping late hours and be more and more out of the home. He could say there is extra work in his office or he is doing overtime on the directions of his boss. If he is the boss himself he may say that the board of directors has given him some additional tasks to complete. In case this happens over a longer period then it's best to check up from the office. But be discreet, that is the name of the game.
c) The husband will stop going out to dinners and functions with his wife. In case he does go, the frequency would be greatly reduced. The wife would not that the husband is a little aloof during these outings and she wills not that the man wants to 'get it over' and head back quickly.
e) Lastly, the husband would not be performing his marital duty in bed and would fall asleep soon with the refrain ' I am tired'. Thus, sex would not be there. When this happens the alarm bells must ring in the wife's head. A woman or wife can also have a marital love affair. But as women are more emotional and sensitive the extramarital love affair is likely to deeply affect the wife's psyche. Unlike men who can mask their emotions and love 2 women at the same time, a woman is unable to do that. She is likely to become neurotic and tense and that could adversely affect her temper and attitude.