Just go sniff some anhydrous... that'll clear your head and make you think of nothing for a long time...
Farmer, the first OM that I know about... his M failed a few years ago. He was a basket case. Two kids and his ex appears to have been MLC. Although that is only based on his side of the sad story.
This guy and I were good friends. My W appeared to have become smitten with him some two years before hand. Always trying to take care of him... I think she has a bit of a saviour mentality...
Anyhow, I can not be absolutely sure there was anything other than an EA. Not that I like that idea better, but somehow it feels a little more benign. That she had been trying to save him, became attracted to him, so when she started having her second thoughts about the M, she sought him and he "was emotionally there for her"... Innocent enough... At least that's the story my mind has currently decided to believe...
Your W most likely reached out to him... perhaps because the two of you ARE (now were) friends... confiding in him because he otherwise knew you best and was "safe"...
So all I'm saying is that, while it would still take a lot of time and effort to be comfortable speaking with or having beer with OM1... the feelings of anger towards them doesn't have to last...
Call him stupid... but it is probably likely that IF there is anything there... it did not start intentionally... he wasn't looking to screw both you and your W at the same time...