Intimacy doesn't equal sex
When a man and a woman reveal themselves to each other, it makes each person feel more vulnerable. And, particularly for men, it's hard to have amazing sex while feeling emotionally exposed. Our earliest experiences with being close come from our relationships with parents. And those relationships aren't (in any normal scenario) linked with sexual passion. That's why some husbands and wives are open about what pleases them sexually only when they have affairs. They feel as if they have to be free of "family" to be free with their amorous impulses.
When a man and a woman reveal themselves to each other, it makes each person feel more vulnerable. And, particularly for men, it's hard to have amazing sex while feeling emotionally exposed. Our earliest experiences with being close come from our relationships with parents. And those relationships aren't (in any normal scenario) linked with sexual passion. That's why some husbands and wives are open about what pleases them sexually only when they have affairs. They feel as if they have to be free of "family" to be free with their amorous impulses.