What was I an idiot? Of course there's an OM...

[2thepoint]

WHG - I sympathize with what you are dealing with. The best thing I think you can do is those type of situations is to do your best to compose yourself then leave. Go for a walk, do anything, but get out of the house while you work to compose yourself.

Part of me wonders though if your W does these things knowing exactly the kind of effect it has on you. If this is true then all the more reason to be brief in your interaction in these situations and move along as quickly as possible.