I only know of a few things my ex did after our separation.

She continued the sexual acting out that had been a problem while we were together. I heard from a pair of mutual friends—a lesbian couple—that she had propositioned one of them while the other was present. These friends were strictly monogamous and were rather grossed out by the suggestion. My ex, as far as any of us knew, had been strictly heterosexual up to that point. I guess she was in a mood to experiment.

Two months after she left me and moved to a nearby city, she returned here to vote in a local election. She said she considered it OK because she was still at that point co-owner of the house we had lived in. I considered it election fraud. I thought about turning her in, but I didn't, thinking people would see it as a spiteful move on my part (which it certainly would have been), but I still wonder whether I did the right thing.

She married a guy much younger than herself, a pothead that she had picked up as a hitchhiker in California. Despite the inauspicious beginning, they are still together some 20 years later.