Keep your expectations in check L2L. If he does follow through w/ the lunch or whatever do your best to listen, validate, ask questions to help gain clarity on what is going on in his head.
If he asks you a difficult question that you are not comfortable answering simply tell him you need some time to digest and process and you will get back to him when you are ready.
I would give anything to have my WAW say what your h said but I would also be scared so again, keep your expectations down as much as you are able.