Guys on Why They Don't Talk About Sex (to women) - A List of Perspectives:
Macho Man - He does, but only in euphemisms, gestures, grunts, and random pelvic thrusts to the air - all while maintaining a death grip on a bottle of Budweiser.
Fake 'Sensitive Guy' - Because he thinks if he doesn't talk about it, it will make him virgin-like, and he hopes the girl he wants to sleep with will think he is 'have-sex-with-me-b/c-I'm-chivalrous'
Intense Intelligent Man - Will talk about sex, but through 'other people' in the hopes that his observations will lead to his own self-gratification.
The "Virge" - Will look away abashedly, cheeks flushed, thinking that he has entered a realm of the perverse.
Binge-Drinking Party Dog - Talks in normal tones and about world issues to fellow female students or coworkers, until he drinks enough to talk about sex, but then it is Beer-Ebonics, & shameful.
The "Howler" - Has intense reasonings about sex issues, biases, and conversational ethos...but all that comes out is a wolf-call to the primitive. (see: cat-call, shriek whistle, and "yeah, Baby")
Silent and Dark Man - Thinks that no conversation will keep the mythos about his own sexual persona alive..that the woman will take a thought and run with it, and fill the blank in with Him.
The Scientist - Will talk about sex, but which equates to the relevancy of National Geographic and soft-core pornography. Essentially doesn't talk about 'sex', but more about issues. Has big words.
The Stalker - You don't even want him to talk about sex.
The Hippie - Starts to talk about sex, then offers you a joint, and you both engage in your own 'conversation' in the woods, at night, while the Aspens are quaking.
The Husband - Wants to talk about intimate sex, profoundly, but knows what you'll get mad at, so he harbors his own fantasies, and tells his buddies he was a 'champ' in college.
The Champ - Has had a lot of sex, yet knows nothing of intimacy, but knows because of his experience that if he talks, there will be no sex in the future. But the women find out eventually.
The Homosexual - Will talk about sex profoundly to women, in great and sensitive detail, but the women don't listen, because they generally don't identify him as a 'man'.
...and then there are people like me, who will talk about it in frank detail, in confident maturity, and also with a tinge of humor, because I believe the issue of sex in America has become mystified. In reality, it is a topic that pertains to life, and it deserves conversation, deep personality, and acute recognition. How can a man develop a mature sexual relationship with a woman if he cannot even bring himself to bear when it comes to the topic of wants/desires, consequences, intensities, realities, spiritual awakenings, and so forth? If you ask me, there is no blanket statement as to why men don't talk about sex (to women...because we all know that we are man-to-man braggarts). Every man is an individual, despite what I have written here. And equally, every woman is an individual - which precisely leads me to the conclusion that each man and woman, as individual equals, need to talk about sex...before it happens, after it happens, and as it happens. Honesty is lintegrity, integrity is maturity, maturity is openness, openness is love, and love sometimes equals sex. And there it is.
thanks for your forum post,
Poi Dog
JoeUser Forums
It's just that I don't tend to talk about it HERE. 
Ummm . . . that would be ME and that was because my husband was thousands of miles away serving our country.