Any couple's sexuality is more than sex. It is mostly about affinity in daily life. Asexuals even have affinity, usually in the rectory, abbey or convent, although some are gay celibates (or not so celibate). Plato thought such affinity was the highest form of love, but he may have just been cheering for his own team not concious that he was wired differently from the norm. That is the problem with most of the Catholic hierarchy in a nutshell.