Jane, the process appears to be different although as I am not a woman I have no direct experience of that.

The pleasure received and given can be very different in that the woman's pleasure can continue while the man's is within a shorter period. outside of the use of variety and limited use of penetration. A woman can, if she chooses, have a dozen partner in a single night, a man usually has a much more limited number without the use of drugs.

Thanks Stanley. Of course I am always hoping that a woman might be interested in sexual topics. But I would have though that heterosexual couples might discuss some of the issues I raise. Men are limited by their responsiveness. Women can engage in sexual activity indefinitely because they are unresponsive with a lover. Women also obtain significant rewards from men for providing intercourse. Heterosexual activity focuses on male needs, which are defined by reproductive biology. Responsiveness is a vital aspect of male reproductive function. A penetrating male is motivated by his a sex drive to penetrate an orifice - vagina, mouth or anus. The receiver role (male or female) is to accept male thrusting and ejaculate. This is why the penetrating male pays for sex and why he also has to compensate a receiver for the pleasure he enjoys. The receiver may enjoy some from feeling admired and needed as well as the emotional reward of pleasuring a lover.