X bought his house with his sister as co-signer last October, just 4 months after the divorce.
The same sister who finally came out and said her long-time, still-married "friend" had moved in with her this summer - she has been having an affair with him since the early 90's. It was long-suspected but ignored, for the most part (he wasn't showing up at family holidays, was always referred to as a friend, etc., but everyone knew he was married while he spent lots of time with SIL). X never, ever liked or trusted the man because of it. At one point, she told me she didn't understand what her brother had done, felt terrible, didn't like the other woman (remember, his family has known her as a "neighbor/friend of our family" for years), hoped he would wake up, etc. Now, she goes to visit them regularly. What a surprise. At least they have each other to commiserate with, right?