Searching for a story.

I've been trying to find a story that a saw a few years ago. I was deployed in Eastern Europe at the time, so it is possible that it is simply unavailable in my current location. It was a <fairly brutal> story that involved two married couples (M & F) going at it in the ring with no holds barred. If I remember correctly, each wife had basically bet that their man could beat the other, and placed themselves on the line, though everyone's crotches got pretty abused, and tag-teaming was encouraged.

I do remember it was in English, though it is possible it was auto translated.

I recall having searched "savage Ballbusting Stories", but have had no luck now.

I vaguely remember details, but seem to remember it mainly being a fairly loving story between the two couples that just took it a bit too far.

The story would have been in the 2017 or later range.

Any help?