Diane - I am so sorry that you are still waiting for your letter from him. One quick comment. As I started doing the R talk with my W, I have found that it is an ongoing thing. At first you think that you can just tell them how you feel one time and that is enough. It isn't though (even though in our minds it should be enough). Of course you have to wait until the time is right and try as hard as you can to be calm about it, but still the conversation doesn't end with a one time talk.
For now I would give him time, just be prepared to have to bring things up again. Don't be too discouraged, I've been at this for 6 months and only now feel like we are getting somewhere.