Sex without love is merely healthy exercise.
(Robert A. Heinlein)
When I first found this quote, I thought, “Where did that come from?” I couldn’t place it and still can’t: I cannot find a source for this quote. Being as we sci-fi geeks keep pretty meticulous track of our heroes’ writing, the lack of traces to published work makes me suspect this pearl of wisdom is ascribed to Heinlein inaccurately.
But the quote itself is accurate. Yes? To my dismay, I’ve found it to be very true.