I don't understand the tepid reviews of this novelette. It's "couples erotica," not "whacking material." It's so beautifully and sensitively written that most other erotica looks amateurish and crude by comparison. The characters of Allan and Kate are almost too appealing to be borne, and the final scene, where Kate gets the family she wanted in a form she wouldn't have expected made me bawl my eyes out.
Anais Nin would love it. It's a lot like several of the stories in her collection "Delta of Venus." But then, Anais Nin had had her own encounters with "customers" who claimed they wanted erotica but really wanted "whacking material."