Mystery and a tinge of menace are the two points from which sadomasochists blissfully suspend their disbelief. But for all the anarchic intrigue and thrilling hints of danger that come from S/M (and its kissing cousin, D/S—dominance and submission), there needs to be some order amid the freaky carnal chaos. It's not wise to hit and kiss without some sense of how far one can take things.

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