Keeping sexual communication open throughout your relationship is critical. As one partner starts closing off, and not just having periods of low sexual desire, but shutting down the idea of sex, something is going to break down.
So what do you do with a relationship between men and women when the request for sex is constant and unrelenting? Well, of course, the man needs to figure out a way to pleasure himself, or he's going to be frustrated a lot of the time. And it's really not the woman's responsibility, even in a marriage, to pleasure us.