Q.76: What is required in the seventh commandment?
A.The seventh commandment requires the preservation of our own and our neighbor’s chastity, in heart, speech and behavior.
Nevertheless, because of sexual immorality, let each man have his own wife, and let each woman have her own husband. Let the husband render to his wife the affection due her, and likewise also the wife to her husband. 1 Corinthians 7:2-3