Never reached orgasm in my entire sexual history.

Hi. :-)

I'll get right down to it. I'm a twenty year old guy who's never reached a climax with any partner, during any sexual act. The only time I've ever ejaculated was during wet dreams, and I've never masterbated - I've really never had the urge to.

For my entire sexual history, I've had three or four partners, and now I'm in a serious (engaged) relationship. My fiancee drives me wild - I've never been so attracted to anybody - but I still can't reach an orgasm.

I have no problem getting an erection, but it eventually just subsides, regardless of how infatuated I am with her, even during oral. In the shower, upside down, handcuffed to the bed, wearing edible underwear (we're both a little kinky)... it doesn't matter. Still no juice.

Our relationship couldn't be better, but I get the feeling that she sometimes feels that, because I can't orgasm, I don't find her attractive. That couldn't be more distant from the truth.

Any advice? :-)