 Because sex is considered chaste only within context of marriage, it has come to be called the "nuptial act" in Catholic discourse.Among Catholics, the nuptial act is considered to be the conjoining of a man and a woman through sexual intercourse, considered an act of love between two married persons, and is considered in this way, a gift from God.When discussing chastity, the "Catechism" lists several transgressions and sins against it.