That ability to constructively deal with conflict seems to behave much like a rubber band which, once snapped, is nearly impossible to repair without outside intervention. Especially considering the asymmetry of opportunities for mating and relational/support outlets that are available to women today vs men. It is super important to protect the couples’ ability to be constructive. I’m watching couples that I know who have lost this ability, and it is sad to see. Every little disagreement results in a multi day withdrawal.