Now, about what you wrote: "It's good for a man not to have sex with a woman."
Each man should have his own wife, and each woman should have her own husband because of sexual immorality.
The husband should meet his wife's sexual needs, and the wife should do the same for her husband.
The wife doesn't have authority over her own body, but the husband does. Likewise, the husband doesn't have authority over his own body, but the wife does.
Don't refuse to meet each other's needs unless you both agree for a short period of time to devote yourselves to prayer. Then come back together again so that Satan might not tempt you because of your lack of self-control.
I'm saying this to give you permission; it's not a command.
I wish all people were like me, but each has a particular gift from God: one has this gift, and another has that one.