I'm so glad you brought up Bateman and the fruit flies as well as Darwin's Victorian-influenced beliefs.

I've read quite a bit about how women find their libidos tanking a few years into a relationship, not because they are no asexual, but because their needs for variety and excitement are not being met and they shut down in response.

If you are ever interested in writing for Sensual: An Erotic Life, we'd be glad to have you.