I'm right there with you on this one. Being a survivor of SA has been a big factor in my teen/YA/adult relationship behavior. I never learned about having appropriate or healthy boundaries in that regard. I learned that sex was a weapon and also something secret and shameful. I learned that I existed for the pleasure of others. I learned from the people who were supposed to be protecting me that the things that had happened to me on their watch were my fault and meant that I was a "bad girl" and unworthy of real love.
And I'm also with you on the whole "blocked sexual energy" thing. I've fulfilled my biological destiny, and my sexuality is so twisted up with shame and fear and weirdness that it might take me another lifetime to untangle those emotions.