Couple months ago I read this very detailed and alluring post on 4chan about this husband and wife who were happily married but need money. Along comes the wife’s ex and they are unsure at first if they should let him stay but he gets them to agree.
The rest of the story is how the ex tries to flirt with her and she pushes him away until the husband agrees to take more money so that he can watch them have sex.
Source: reddit.com/r/Erotica/comments/48pfl5/request_find_a_story_of_a_husband_wife_and