Yes - he is working through 'his stuff'. Our sitch's have taken different trajectories and I am happy that your H is at least attempting to walk the same path as you. I think we've said it before, but your H is very much like my H. I know that it would have taken a h*ll of a lot of humbling for him to walk back through that door and even then there would be no fireworks, no romantic gestures, no untangling of what had happened or acknowledgement of the pain caused.
Time and patience I guess. If anyone has the patience and emotional resilience to get through this (even without the proclamations of love), I think that person is you. He might never open up fully but slowly the connection will start to feel less forced. Remember, there is a lot of shame and guilt in there that he isn't sharing with you because he hasn't dealt with it yet.