Men have “assertive desire” and are ready for sex very quickly.
My surveys of men and women have found that most of the time when there’s a difference in desire, it isn’t because of the husband’s desirability. Instead, it’s probably mostly a physiological difference between men and women. See, with more testosterone, most men have what is called “assertive desire,” and want to pursue sex and are ready very quickly. That’s why Dan can get into bed, snuggle up next to his wife, and immediately be ready to enjoy some intimate time with her.