Honestly, I don't think you did anything so terrible. But the fact is that he does.
I guess my best advice is to validate and agree. Don't explain or justify. Reflect back what he says.
Example: H- How could you violate my trust again? you- We were just building trust and now you feel like it's been lost H-Yes!
etc.
Don't try to justify... often if you agree with a person who is angry with you they will end up defending you. If you give him room to be angry without trying to talk him out of it, he may just get over it by himself.
