I was raised in the religion and was always told what was acceptable... I think being a girl the elder's wives and such tend to preach during service and really pound it into your brain what is good and what is bad.
Don't you all remember the scriptures about "keeping the marriage bed clean and sanctified" and stuff like "the natural use of the female" ... meaning the female body is built for sex in this certain way, which produces offspring, other "unnatural" uses of the female just lead to uninhibited pleasure and we'll have NONE of that!!!!
The "natural use of the female" bit used to crack me up.
I do know that MARRIED couples were all counseled back in the day. Probably 15 years ago, I had a friend who was married. There were 3 couples who all hung out together, and the wives pioneered and had babies, etc... they were all friends. Well, some elders wife got wind that the wives were performing oral sex... so all three couples were hauled into an elders meeting and all told NOT TO BE DOING THAT ANYMORE!!! I mean seriously, I can remember her telling me that the elders gave them specific directions not to be having any form of oral sex.
And about JWs having a good sex life???? I don't know that many that were all that happy. I knew 2 couples that slept in seperate bedrooms, they had their 1 or 2 token kids and then all moved into seperate bedrooms. It was sad, not common knowledge, but I knew about it.