I can imagine the temptation, I really can but something I witnessed a few good years ago would make me not bother.
I was in Tesco once and witnessed a confrontation between, I am guessing, a wronged wife and the mistress.
I was looking at the fish fingers when a loud booming voice took over the most part of the fairly large Tesco store saying
"So whats it like sucking your own shit off my husbands cock your filthy slag/slut?"
The whole shop went silent. I have to admit to leaving my fishfingers in the freezer to witness the incident along with most of the other shoppers. There was a red faced shaking young woman stuttering something like "I I I D D D Don't know W W W W What Y Y Y You're on about"
To which the wife threw a torrent of abuse at the OW -lots of Fcks and something about a saggy cnt and enjoying up the arse on a Tuesday night when she was at the Gym or somewhere! Eventually she was removed by security Literally redfaced, crying (with anger I think)and still screaming torrent of abuse.
The OW stood there and yes people also stared at her, I noted a few sneers in her direction but nothing more. The main attention was on the wife, who could still be heard shouting despite being out of sight.
The "wife" looked well turned out, nice hair, sophisticated clothes and a fab handbag. Purely based on her appearance I would guess that she was normally a level headed decent member of society. However, her behaviour - (no matter how hurt and angry she was) made her look like a complete nut job.
I wonder whether she thought she could just go in for a look at the OW or for just a quiet word to get her point acorss but rage and emotions over took her??? Ofcourse we'll never know, but would you want to be dragged out of Tesco backwards kicking and screaming in rage??
Have your fantasies about all the different ways you could get back at the OW and share them with your friends. Talk it through, laugh about it but dont carry it out in RL. You will come through the anger and pain one day.