I'm interested in locating this short short story that was in one of the many collections I devoured as a teenager in the 80s. Sci-fi/ fantasy, translated from French, I think. But the collection as a whole was American. Two lovers, a man and a woman, exploring each other's bodies, and the woman discovers a button in an out-of-way-at spot on the man's torso. The woman wonders aloud and gives it a push and hears a pleasant masculine chime. They puzzle over the implications. Is he a robot? Does it matter? He in turn discovers a similar button on her which produces a feminine note when pushed. Further philosophical pondering, ending with a cheerful "oh, well..."