Well, FWH had been thrown out of our home and wash shacking up with OW in a friend's camper.
We talked for the first time in months. Both cried, and admitted we still loved one another. He called me the next morning and asked if he could take me to breakfast, where there was more crying and more confessions of feelings and regret.
He text me after we parted and asked if there was ever any chance for us, and I said maybe one day, far far in the future ("like, if I am ever an elderly woman with no one to take care of me, I might let you wipe my ass" was what I was thinking).
He then went away for the weekend with OW, her family and friend. He kept calling me and leaving messages and proclamations of love the whole time.
On Sunday, I finally answered. He told me again how much he still loved me and how sorry he was for everything he had done, he'd never forgive himself, what a mistake it was, etc. I asked "Whaere's (OW) when you're talking to me like this?" and he told me she was sitting there at the table with him (another "FWB" scenario).
I heard muffled wailing in the background, which then faded away. I asked who it was, and he told me it was OW being led to the bathroom by her friends (after hearing the conversation we were having, and her friends were very pissed at FWH). I told him to go comfort her and leave me alone, then I hung up. I could tell he had been drinking and I actually felt sorry for OW, who obviously felt more than the "FWB" she was claiming to be, and I was disgusted.
He dumped OW when they got back into town that night, telling her that he "had to try to work things out with Want2help". She maintained that I wouldn't take him back, etc., cried, asked why he hadn't told her sooner (I'm 99.9% sure she already knew she was pregnant at this point), then she packed up and fled to her friend's house, and he began walking towards home (I had both of our vehicles at our house).
Did my FWH have sex with her that weekend? He has maintained that he did not, but I sincerely do not believe him. She has since posted online dozens and dozens (maybe a hundred) pictures of that weekend, and he was ripping drunk the entire time. Now, at 7 years out, I don't know if I even want to know the truth.
She then began YEARS of harassing ME. Only twice ever trying to contact FWH (once to tell him she was pregnant, once to invite him to a party she was throwing for my stepD, which was never received by him).
He has never broken NC, and has been an exemplary model of a remorseful FWS.