Bdsm outside of marriage is a sticky proposition. Choosing my words carefully, love and sex are not necessarily the same thing. For instance, I surely love my wife, and our sex life is great. However, there have been women with whom I have had bdsm scenes, which included sexual activity. But, I did NOT love any of them. In fact I have had relationships with women, that were strictly via cyberspace. A lawyer would probably see that as adultery, and it probably is. On the other hand, if a man and a woman have a solid foundation, where jealousy does not rear it's ugly head, I don't see anything wrong with a cyber bdsm relationship.

That's my take on this subject.