(((((Fallgirl))))) I don't think I'd offer to sleep in the guest room. He chose his bed. Let him sleep in it. You didn't make a big deal of it, I would continue that by not saying a thing about who is sleeping where.
I think I would be tempted to get a lock on the room you are sleeping in.... but then I worry about the kids.... bad situation. He isn't going to like it when things start going against him, as they surely will. Be watchful, and careful!
