You will feel better about things as H becomes more and more consistent w/ his behavior. As his changes become more apparent and more lasting, you will feel better.
It is completely fine to be guarded. You've been hurt. He has a LOT to prove and that will take time.
Allow yourself to sit back and observe in the best way that you can. I know your heart is wounded and confused - You know I completely understand your pain.
Remember, time is your friend. Let time work for you now.