Sex for me is neither expected nor essential. As I said in the other thread, I am not a sexual person. Sure, I like sex as much as the next person but I have a lot of trouble getting going and will hardly ever go out and initiate it.
Why? To be honest, I don't know. Perhaps it is because I grew without much guidance in that area, maybe I just lack the hormones. Who knows.
So, sex is not a big part of BDSM for me. I like the serving and tasks. That is what I do as it makes people more comfortable. Sure we usualy have sex after we do a session, but it is more of an after thought than anythng, a way to blow off the excess energy we had built up after a flogging or what have you.
Now love...well I would have to say yes. I cannot submitt to someone fully whom I do not love. I would probably if it were supervised by someone who loves me because that would be a little extra garuantess that things will not go to far. Someone who does not love you might try to push you too far, someone who loves you most probably would not.
However, there are Dominants that train submissives and have strict rules that there is to be no sexual content. They train them to be submissive and that is that. No sex no nothing.