Couples should value each other so much that they actually reverence each other, almost to the point that they could genuflect before their spouses. Because God dwells in their souls, we should treat our spouses as reverently as we do Christ in the tabernacle. Our Lord in the Eucharist is a gift to us and a means for our salvation. So, too, are our spouses, although not in the same form, ontologically speaking.
Sometimes what you think are the dumbest things your parents ever did turn out to be the most profound and useful life lessons. Marge dedicates this episode to her dad and describes a vital life lesson she learned from him about dealing with difficult people and situations.