He is probably feeling this way and doesn't want to go to how it was before and it is good that you too don't want to go back to that kind of R.Obviously he was unhappy which resulted you to be unhappy.
Give it time.Yes its hard for him to see that things are different especially if you are not living under the same roof BUT he will find out through friends and family that you adopted a healtier attitude, living life and your not at home crying yourself to sleep (you may be but he should never know). I guess the whole part of DBing is to save a marriage but yourself too.
3 months might be nothing compared to people on the forum, but i bet those 3 months feel like 3 years. Don't worry we all feel like separation is eternity. Men's mind work differently to women,sometimes if they have been unhappy for a while, all they want to do when they are out of it,is to concentrate on other things that keep their mind off it. I believe they put their feelings in a closet and hopes it goes away by ignoring it.
Your definitely not wasting your time. As long as you believe and willing to work on the R even if your the one doing the all work now. You obviously want to make this work (you wouldnt be on this forum if otherwise) but he's been hurt..so it depends on how damaged his heart is will determine how long he might come back around
I looked up your posts too...i couldn't find the original one, as i could find a few from you.