Well while I have never technically had sex in my dreams, I have definitely had sexual experiences. One time I actually was about to…err…begin to have physical intercourse when the dream ended. But all the stuff leading up to it was fun…
Last night I climaxed in non-lucid (or possibly layer zero) and it didn’t feel as good as in real life. (Not that I wouldn’t do it again) I don’t think I will be able to have “true” dream sex until I have it in real life.