Ruby, GOOD FOR YOU for sticking to your guns. Try not to explain it so much to him, though -- "Look, you know where I stand. This is your mess; you need to clean it up" (or something similar ... nothing longer than that).
My mentor once told me "You can't teach an infidel," and it's true. If and when your husband is serious, he will come to YOU and start suggesting ideas for no-contact, transparency, etc., etc.