My H rarely apologized either. Instead, he'd become defensive or angry. Saying the word "sorry" seemed to be difficult for him. This is another area that's finally improving since DBing. Hearing my H say "sorry" feels almost as good to me as hearing him say ILY.
Like you, I'm learning to give him time to process things on his own; otherwise, he does become defensive. I think you're doing great at forgiving and DBing; and I've added your thread as a favorite.
Even if you're on the right track, you'll get run over if you just sit there. Will Rogers
To love at all is to be vulnerable. Love anything, and your heart will certainly be wrung and possibly be broken. C. S. Lewis