Except For Fornication
Before marriage and sex: A righteous man (as Joseph, who was thinking about putting away Mary until he learned from the angel) would not want to live with an unclean woman. (Mt. 1:19) Contrarily, today, many illegitimate marriages begin by a man marrying a woman who did not marry her first man. Such a used or defiled (polluted by fondling or “known by a man” especially through penetration of the genitals, including incest) woman who marries another man commits fornication, not clean marriage. Such marriages should be annulled and divorce is permissible (Mt. 19:9). Purity is a requirement. Men who live with unclean women as such have no biblical right to consider themselves in sanctification and a good way with the Lord: See Galatians 5.19. Nevertheless, there are many such men (and women) teaching and deceiving others in the apostate churches of the era we live in.
The book of According to Matthew opens the eyes of people as to the causes of adultery and when it is permissible to divorce a defiled woman. “And it is said: A man who looses his wife from marriage, let him give her a bill of divorce. And I say unto you whosoever divorces his wife except for an account of fornication causes her to be a partner of the commission of adultery, and whosoever marries a divorced woman commits adultery.” (Matthew 5: 31, 32 [my paraphrase from a Greek text: note if a chaste woman was never divorced, she could not commit adultery unless she chose to but when the husband forces her unwarranted departure he shares her guilt of wasting her former chastity and satisfying her sexual appetite with another. However, by no means does it make it okay for anyone involved.])
The Lord Jesus referred to the second law (Dt. 24:1-3) of Moses, which was known and practiced at that time. The Bible reveals that women have natural tendencies to have sex and that a good man is responsible to fulfill his duty in keeping his wife moral and giving her sexual pleasure as she is also expected to give him due rights (I Cor. 7:3). Also, if a woman keeps herself clean from the time of giving her virginity to a man and marrying him unto the present, her husband has no right to divorce her ever.
After marriage and adultery, different than fornication (see I Cor. 7:2), which is discussed above: It is only when a wife becomes defiled that a man has the obligation and right to keep himself clean by not having sex with her. Then he should work out something to prevent a defiled relationship among themselves. A separation would be necessary, but as to a legal divorce (put in writing) in such a case of adultery, certain conditions must be considered; nevertheless, regardless, he could not marry again so as not to break the monogamy (I Timothy 3:12) and non-adultery (Mark 10:10-12) rule, and the defiled woman could not offer another man chastity nor remarry. Both would be in a position to live single lives. Sanctification is the issue that must be resolved.
Links:
Sexual Cleanliness Transparency Needed
Paul And Morgan Admitted Fornication
Woman's Purity Damaged By Priest
Building A Recovery Platform For Singles
Chaste Woman's Right To Not Be Divorced
Fall From Morality To Cuckoldry