Cindy, I wonder if when he tells you to relax he means that he feels he is only asking you for some space... not a D. That he wants to be able to have some space, and to ask you for that space and expect you not to become upset.
Remember what Michelle says about two steps forward and three back. Unfortunately, this is not a linear progression.
But, although you might not want to hear what H is saying, he is trying to talk to you and let you know that he needs a bit of breathing room. Sometimes you do to, right? I know this sounds STUPID, but try not to take his telling you he needs a bit of space personal...
Hang in there. Yes, it is very hard. But, you are not D, your H IS willing to work on the M, just not at the speed and intensity that you would like.
Relax. Appreciate. Be calm. Laugh. Enjoy. Be secure. Be loving. Be loved. Don't personalize. Don't ASSume. Accept. Be grateful.