Or rather, male desire. Many Christians seem to have real problem with it. I just googled "The Song Of Solomon" and found articles trying to explain it away as "the picture of Jesus and the Church", questioning whether it's canonical and apologising for Solomon's polygamy. Because, you know, polygamy, while obviously not ideal/the original God's design is never actually forbidden anywhere in the Bible or expressly called sinful, unlike other "alternative" lifestyles which many Christians now express sympathy for. Just as long as men don't desire women it's fine, I guess...
And Solomon, btw, was criticised for taking too many foreign wives, because they turned away his heart from God. Also, obviously, nobody can be a good husband to 1000 women. But David was also polygamist and not really criticised or punished for that, unlike for his adultery with Bathsheba.
Now, speaking of adultery, the Bible verse which forbids male lust, talks precisely about it:
But I say unto you, That whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart. 2
In order for a man to commit adultery with a woman, she has to be the wife of someone else. This is perfectly in line with the 10th Commandment:
BTW, adultery in the Bible is defined in this way:
10 And the man that committeth adultery with another man's wife, even he that committeth adultery with his neighbour's wife, the adulterer and the adulteress shall surely be put to death.
Married man visiting pr8stitutes is obviously wrong, but it's fornication and wh8ring, not adultery and before the triumph of Western feminism, the wife usually couldn't get divorce on these grounds alone, unless there was also some form of abuse/abandonment present.
Anyway, getting back to the topic of male desire. If it didn't exist, there would be very few marriages and children born. Of course, the desire alone is not a very solid basis for marriage, there should be also considerations of character and compatibility but unless we are talking about 100% marriage of convenience, a man isn't going to run after a woman he doesn't find attractive.
I'll even go further than that, a normal heter8s8xual woman is supposed to desire her husband, too. She must find him attractive enough for these purposes, because marital bed is a very important part of marriage. In fact, until the marriage is you know, consummated, it's not considered a marriage at all and even medieval Catholic Church allowed annulment in these cases.
Thus, s8x is literally what makes marriage a real marriage and not just two friends cohabiting. Somehow, men are constantly made to feel ashamed for "objectifying" women. They are supposed to "earn" the access to marital bed by
performing tricks being good boys
On the other hand, you will have internet gurus telling wives just to "grin and bear it", to satisfy their husbands. While they look like the exact opposite of the 1st group, they proceed from the same idea. That s8x is something unpleasant, what "good girls" aren't supposed to really like, but should perform as a chore/duty. No wonder, we have so many divorces.
As a wife, you should be glad that your husband (still) desires you, and not some other woman, especially after many years of marriage. Don't let yourself go, take a good care of your health, try to look feminine and enjoy it when your husband comes home from work and runs after you. Don't be a tight-laced prude and don't turn into his mommy. Men usually love their mothers, but don't desire them:)