Okay, on the religious side, there are a number of various angles, one is the traditional view pushed on the masses to control and make good robotic workers. If you consider the old testament there was an allowance for multiple wives, for taking the brother's wife if he died and other things we would say are very strange today.
The translation of man and wife can also described as follows, a wife is any woman who a man has sexual relations.
Consider the book sex before Dawn or the naked ape as well.
A question, why would a kind God give us desires to breed and have it be such a strong drive and make it so pleasurable if it was not the intent to enjoy and share. In fact recall the commandment to be fruitful and multiply.
It could be argued the current preaching of this topic is designed to control the masses not to fully explain the intent of the creator.
Jesus says, love your neighbor as you self.
You are addressing the 7th commandment here and consider the following.
What Is Adultery?
The ancient Hebrews, in particular, had a very restricted understanding of the concept, limiting it to just sexual intercourse between a man and a woman who was either already married or at least betrothed. The marital status of the man was irrelevant. Thus, a married man was not guilty of “adultery” for having sex with an unmarried, unbetrothed woman.
This narrow definition makes sense if we remember that at the time women were often treated as little more than property — a slightly higher status than the slaves, but not nearly as high as that of men. Because women were like property, having sex with a married or betrothed woman was regarded as misuse of someone else’s property (with the possible consequence of children whose actual lineage was uncertain — the main reason for treating women this way was to control their reproductive capacity and ensure the identity of the ******* of her children). A married man having sex with an unmarried woman was not guilty of such a crime and thus was not committing adultery. If she also wasn’t a virgin, then the man wasn’t guilty of any crimes at all.
This exclusive focus on married or betrothed women leads to an interesting conclusion. Because not all extramarital sex acts qualify as adultery, even sexual intercourse between members of the same sex would not be counted as violations of the Seventh Commandment. They might be regarded as violations of
other laws, but they wouldn’t be a violation of the
Ten Commandments — at least, not according to the understanding of the ancient Hebrews.
