should I tell this married man's wife he slept with me while she was 9 months pregnant?

[Jacob]

What you want to do by informing his wife is to make sure that this guy's family is destroyed, cause you are bitter. Your bitterness is caused by the fact that this guy used you for sex because he could not sleep with his wife at the time, a wife he believes is amazing. Stop plotting your revenge and accept that you were never forced to sleep with him. If he tricked you then consider this chapter of your life closed and move on - telling his wife will make you feel better but will make another woman miserable. Delete everything about this guy from your life and stop sleeping around if you are not married. It might make you happy now but remember that some day some woman will also sleep with your husband when you least expect it.