Haven't RTFT, but the title caught my eye ...
if my wife and I had not been completely open, we'd have split ... Her DM (my MiL - now NC for us both) had managed to get between us using my insecurities, and my wifes position as her "BFF".
Funnily enough, I was remembering this, earlier. One incident (and not the most way out, by a long chalk) was to tell me that my wife thought I was getting a bit chubby ... of course my wife would never say anything to me. So I started going swimming regularly (swimming is the one sport/activity I'm actually pretty good at).
Then MiL commented to my wife "Oh, DGs suddenly got interested in getting fitter ... are you sure he's not having an affair."
Unfortunately for MiL, my wife and I talk - about everything (I hope
) and I was immediately able to say that it was because MiL had said that my wife had said ... my wife immediately refuted it. In hindsight (and luckily) she didn't tackle MiL over it, and we just wrote it off as an odd thing.
Because back then, Mumsnet didn't exist with the wealth of knowledge that means we now know MiL was narcissistic, controlling, abusive, and batshit crazy. Which finally manifested itself in an aggravated assault (hence NC).
I like to think our honesty "innoculated" our relationship against the poison.
By the way, it's not true - not in the slightest - that I use MN for therapy
.