The words "denying one's spouse nothing" are not in the passage.
You used double quotes, I used single -- commonly called paraphrasing.
"4: The wife hath not power of her own body, but the husband: and likewise also the husband hath not power of his own body, but the wife.
5: Defraud ye not one the other"
Better?
Again, I'm not going to fight you... my original reponse was for the original poster. People get all funky about sex. I let them. Hopefully your spouse is in agreement with you, and mine with me. That's ultimately all that matters, right? 'Cause if it ain't whoremongering and adultery, God seems to be quite fine with it, too.