This didn't happen to me, but it did happen to my neighbour. When XH and I split, XH went to live with our friends 3 doors down for the first 6 months. That couple was in trouble already (we didn't know) - and my XH had nothing to do with their woes... but I'll call them Ralph and Alice...
Ralph wanted to fix things, Alice wanted out. Ralph suspected PA/EA... and he was right. He found email evidence of EA, and later, more correspondence discussing PA - he was devastated. Meanwhile Alice ran up all his credit cards, got about 4 speeding tickets, and eventually had a wreck (bad left turn, cut off a small pickup truck with too many passengers) and she totaled the car that he was signing over to her in the D.
Ralph and Alice and XH and I had been good friends - Ralph is like a brother to me - and he and I were there for each other during our respective D's... and NO it wasn't a PA or EA - there's absolutely NO attraction there on either of our parts - it's really like a brother-sister thing... when Alice got in the wreck, he called me to go with him to the scene and we followed the ambulance to the hospital. Alice had bumps and bruises and thankfully the others involved weren't hurt but she was charged, and I'd hate to know what her insurance rates are now...
Shortly after that she moved out of state and goodness knows what she's up to now - but she left Ralph in a state of financial turmoil that he wasn't able to get out of.
He moved out of state too, to live with friends back in January - I heard from my other neighbours (we have a good little 'hood here) that Ralph was back in town a couple of weeks ago to file for bankruptcy. It's such a shame. When he realized what Alice was doing, I helped him with info on how to cut her off from all the credit cards etc., that were in his name - but the damage was done. He had well over $30K in credit card debt, and all kinds of other bills.
Her speeding tickets were in the hundreds of dollars but she fought them and got lucky - another neighbour friend is an attorney and he pleaded a couple of them down for her a bit - but still very spendy.
She drank, she drove, she dieted to the point of looking sick - it was awful to witness.
My own separation and divorce were stressful, and my XH became self-destructive but nowhere near on the level that Alice was.
It's amazing - the analogy that the WS seems to have been taken over by aliens is a good one - because they really do take leave of their senses.
JinGA
