DEAR MISS MANNERS: I’ve become closer to a friend in recent years. While I do not see her spouse often, when I do, he never seems to miss an occasion to say something demeaning about (or to) my friend. Is there anything I can say or do to politely make clear that such comments make me feel uncomfortable? I believe someone needs to stand up to this bully, but I suspect that’s probably not my role, and it could be insulting to my friend. GENTLE READER: “Please be kind to my friend. I’m sure we all have our faults, but I adore her and won’t hear her being admonished. Now, Emmy, tell me again abou…