This is a story in the Collar Club.
A frustrated man cheats on his wife with a hooker, surprising her pleasantly with his dominant ways. Their weekend is rather enjoyable, as it turns out.
Eli and Fontana move into a friendly neighborhood next door to Casey and Linn. After Linn leaves and Casey finds himself horny and lonely a good neighbor finds the opportunity to show him what he might be missing after he seems reluctant to "get back on the horse". However, she has her own reasons for helping him get back in the relationship saddle.
This single chapter story is part of the chain story/universe about the genie Laresa, who is contained in a ring. This story has to do with her adventures with a German intelligence officer and his old flame in the latter part of the Second World War.
I have always had a thing for dental hygienists. They generally tend to be young, attractive women, and I have spent a lot of time in dental chairs fantasizing about whatever young thing happened to be probing my mouth that day. But then I met Molly, and I didn't need to fantasize any more. She was the real deal