g) Unreasonable refusal of marital intercourse is a grave matter. As has been explained, each spouse’s right to intercourse has limits, and usually when either is reluctant to have intercourse, the other should not insist. Still, sometimes a spouse has no justifying reason for being unwilling to cooperate. Such unwillingness can be motivated by anger and hatred, an unreasonable desire to avoid offspring, the manipulative use of marital intercourse to compel compliance in other matters, excessive preoccupation with other activities, and so on. Sometimes, too, one spouse without good reason travels alone or stays away from home for some time, thus depriving the other of the opportunity for marital intimacy. In all such cases, when the spouse deprived of marital intimacy makes it clear, by saying so or in any other way, that he or she desires it, the other should cooperate lovingly, and refusal is a grave matter.
The wrong of unreasonable reluctance to engage in marital intimacy admits of parvity but, like other injustices, only in cases in which, typically, the one who suffers the wrong considers it insignificant: for example, because intimacy is not denied for long and the unreasonable motive is not ill will but only some understandable weakness.
Of course, sometimes the spouses disagree about whether a refusal of marital intercourse is reasonable. Then both should try to find a harmonious solution, but if that is impossible, the spouse deprived of desired intimacy must remain faithful. Moreover, such a spouse should be tolerant, for even when a denial of intimacy is plainly unjustified, physical force, psychological coercion, nagging, and resentment are both incompatible with marital love and ineffective for obtaining the loving cooperation required for true marital communion.