Let your speech be alway with grace, seasoned with salt, that ye may know how ye ought to answer every man. God never intended that we engage in destructive criticism and yet allows, and even encourages constructive criticism. There is a vast difference. Two verses come to mind in this area. Those who engage in constructive criticism want to make the other better.
Problem is, many married couples engage in destructive criticism.
This is not right. In fact it is sin.