A relationship in which partners are monogamous only with respect to the exchange of bodily fluids. Other activity with other partners, like safe sex, BDSM play, a brisk walk, etc. may be allowed or negotiable.
Sure, you can fuck my ass, face, and pussy, in that order! You'll just have to use a condom - my husband and I are in a fluid bond.
by vandalini January 28, 2010

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