Frequently, lovers quarrel simply to recharge the air between them, to sharpen the aliveness of their relationship. To precipitate such a quarrel, the sweaty kimono of sexual jealousy is usually dragged out of the hamper, although almost any excuse will do. Only rarely is the spat rooted in the beet-deep soil of serious issue, but when it is, a special sadness attends it, for the mind is slower to heal than the heart, and such quarrels can doom a union.