Let me point you to Lady Bracknell's recent post, Them. Of particular importance, and exactly on point, is the following:
In other words, "Have you stopped speaking now? Oh good. I couldn't really concentrate on what you were saying because, to be honest, it wasn't actually about me, was it? I'm really much more interesting than your husband could possibly be, and I have really quite dreadful health problems of my own. Which I'd be more than happy to tell you about in minute detail, if you'd like. Oh. Where has she gone? Was it something I said? Funny woman..."
Oh boy, do I know those people.