I would tell him exactly what you wrote here, which wouldn't actually be tattling on the metamour because it's really hearsay and you don't know if it's true or not. But I do think it is something to be concerned about. I would emphasize to him that it is was this person who approached you, brought you the info, was asking you about it, how odd that was, and how uncomfortable it made you to have to listen to that crap. I would make it clear that you don't like gossiping, but couldn't avoid listening to this person, and are trying to give your meta the benefit of the doubt but are concerned about the possibility that people want to shun him. Then I would look him in the eye and say, "Is it true? Does she really think that way and talk like that?" And see what he says.
Last edited by nycindie; 12-11-2013 at 04:13 AM.