The 'round robin' current thread really rang a bell with me - I'm sure in the last couple of years I've read a thread where people were posting their experiences of being on the receiving end of an affair. One person said they did something very similar - added a sentence to an email her husband was sending before it got sent out, or something along those lines.
Am I going mad or does anyone else remember it? I can't be sure but it would probably have been in the middle of another thread rather than an OP all about this itself.
Google and Chat GPT aren't producing anything I'm searching for...
I could totally have the wrong end of the stick and clearly spend far too much time on MN.