It isn't necessarily your wall to break. Forgiveness isn't a gift one gives to another - it's a gift one must give themselves. Until your H is willing to work through the anger and resentment he feels, he won't be able to even think about forgiveness.
Now, please forgive me as I don't know much of your sitch, but it sounds like you and H are S'ed but still living in the same house? If so, just curious why that is? Is it possible for one of you to get your own space? My guess is that H can't miss what he can see everyday.
Getting over a painful experience is much like crossing monkey bars. You have to let go at some point in order to move forward. ~ Joseph Campbell
