u/Anonymoustues

Looking for a story I read a while back. I believe the premise was a friend group that hung out at a pub. Most were couples but there was at least 1 single guy. For some reason they were at the 1 couples house and after everyone else left, the single guy fucked wife/gf in front of her partner.

It was a series and later I believe the couple watched the single guy seduce another wife/gf.

Any help would be greatly appreciated.