Русско-англо-русский юридический словарь

I tell you that anyone who divorces his wife, except for marital unfaithfulness, and marries another woman commits adultery. Matthew 19:9. (BBC)

A second example of present relationship decisions affecting future relationship practices was a study that found a clear connection between the number of sexual partners before marriage and the likelihood of marital unfaithfulness; each additional sexual partner before marriage resulted in a significant increase in the risk of having an affair after marriage. (US Catholic)