NatureGirl, my stomach lurched reading your account of the extreme gaslighting you STBX put you through. There just aren't words for how cruel he was to you. Thank God you're out of that situation.
My FWH used a much milder form of gaslighting. He never intended to drive me crazy, only to make me doubt my feelings, intuitions, and what I had actually heard with my own ears.
Once, OW was an overnight guest in our home, as she had been a good "friend" of WH. My intuition told me there was something going on, but I had no proof. That night, I went to bed early and just as I got undressed, I heard a distinct kissing sound, then a contented little sigh from OW (mmmmmm). Then silence. Then nervous talking, like the kind when you're doing something wrong and try to sound normal.
When she went home, WH and I had our first confrontation. He tried to tell me that she'd gone to the bathroom, yet I had not heard footsteps or water running or a toilet flushing (and I would have from where I was). "I know my boundaries! My god, SadFlower, I would never do anything like that to you! We're {wait for it)...just friends!"
He had been a man of such sterling character, or so I believed, that I decided that I had indeed been mistaken. I actually began to feel guilty for doubting him! No way WH would cheat.
Ha.
Me: BW, age 71
Him: WH, age 70
Married 24 years
In R.
D-Day: August 14, 2012
9 year LTA with former co-worker and family "friend"/7 years EA+PA, 2 more years EA