Here's what I remember:
Couple is at a party. Wife humiliates husband in front of her friends, and talks about the dildos (3 of them I think) she keeps next to the bed named after her exes. I don't think any cheating is involved, and I don't remember the ending. I suspect a resolution. The story just popped in my head the other day, and I've been trying to find it so I don't go nuts.
Thanks in advance. It's always amazing the fandom for good (and bad) erotic literature.