I understand your struggle with wanting to do the right thing and hang in there v. perhaps realizing that this M is not what is best for you. This is not an easy decision to make and also not one you need to make right away.
For what it's worth, my xBF said the same thing about how us not talking (me being dim when living together) was just pushing us further apart. And yet two months later he has realized that he was blowing things out of proportion and not seeing the good parts of our R. So to me it is obvious that going dim/dark has done him some good.
You know your H best and if you feel that he/you are not ready to work on the R due to his personal issues then thumbs up for sticking to your guns.
If you love somebody, set them free. http://tinyurl.com/2empx2g