I was cheated on twice by an XP.
I found out about both of them at the same time.
I was facing losing my home, on top of having lost my dignity.
I broke my wrist trying to physically force him out of said home, while he was giving grovelling apologies.
One of the girls involved, when confronted, apologised. She was genuinely embarrassed at her stupidity, and for the hurt she had caused. Last words I said to her..."What goes around, comes around, you'll get yours, and I hope I'm there to see it". She did, I was.
The other one, when I was on a rare night out, followed us around, just generally being a pain in the arse. When we didn't rise to her, she said to my friend "I suppose you know who I am" TWAT! When I asked her what her problem was she replied "I've never liked you" Her I would happily have slapped!
None of you can ever, ever look down your noses at the OP. Yes it's the husband she trusted, and no the other women didn't make vows to them, but there is a certain breed of OW who deliberately set out hurt people, because they are smug and self centered, and genuinely think they are better, and none of us know until we've been in that situation how we would react.
And FGS, this isn't DV, what utter nonsense! It's one gut reaction, that probably scared the shit out of the OP as she did it. She had no idea how she would feel after it, just so happens that it was good! Good for her!
I've moved on, I have a wonderful DH and two lovely DC's, but the sight of either of those girls still chills my blood years later. I hope those of you on your high horses never have to go there.