It seems to be something that both my father, and now my H are doing too. My father has always HATED country music, and when he was going through his MLC, it was the only thing he listened to. My H always made fun of the people who needed to go to loud bars with expensive drinks in order to just "hang out", and now all he wants is to do that (oh, except not with me, and not in our city, only when he travels).
My dad eventually came back (unfortunately not to his marriage, but to his old self). I'm hoping H will come back to himself as well as to me.