J dating com
tended to adulterate the issue [children] of an innocent husband ...
Though they are sometime erroneously treated as synonymous, these two related concepts are quite distinct, and the historical views of their criminal severity and punishments have accordingly also been distinct.
Polyamory, meaning the practice, desire, or acceptance of intimate relationships that are not exclusive with respect to other sexual or intimate relationships, with knowledge and consent of everyone involved, sometimes involves such marriages.
Swinging and open marriages are both a form of non-monogamy, and the spouses would not view the sexual relations as objectionable.
A single act of consensual extramarital sexual intercourse between a married person with someone other than their lawful spouse is generally sufficient to constitute adultery, while a more long-term sexual relationship is sometimes referred to as an affair.
Historically, and especially before modern paternity testing, most cultures have considered adultery to be a very serious crime.