I would really appreciate some help finding a story I read on reddit a few years ago about a guy who was in France, I think, answering a craigslist like ad for a man to join a husband and wife. If I remember correctly, the wife showered him up and cleaned his ass before blindfolding and tying him up. She she has sex with before the husband joins in.
Source: reddit.com/r/gonewildstories/comments/6wa3o0/mmf_request_for_story_i_read_a_few_years_ago