His house is directly on the lake, it’s a beautiful setting. I wouldn’t want to give it up either.It is a weird decision to stay there why not have a clean break/fresh start, he must really love the home to be set on staying there.
His ex pointed out he made it crystal clear he would expect them to leave because it was his home and he would be moving back in with the new woman and her baby despite the ex picking out the interiors etc
I can only assume they’ve at least redecorated?