503. (ii) Virginity is the crown of chastity and a pledge of conjugial love.
Virginity is called the crown of chastity, because it crowns the chastity of marriage, and it is also a sign of chastity. A bride therefore at her wedding wears a crown on her head. It is also a sign of the holiness of marriage. For after parting with the flower of virginity the bride gives and hands herself over completely to the bridegroom, who then becomes her husband; and the husband in turn does the same to his bride, who then becomes his wife.
Virginity is also called the pledge of conjugial love, because it is a pledge of their compact, a promise that love will unite them to be one person, or one flesh. Even men before their wedding regard the virginity of their bride as the crown of her chastity and as a pledge of conjugial love. They look upon it as the great treat, from which their delight in this love will begin and last. These and previous statements establish that, after her girdle is undone and her virginity taken, a virgin becomes a wife; and if not a wife, she becomes promiscuous. For the new state into which she is then brought is the state of love for her husband; and if it is not for her husband, it is a state of lust.