Those might be nice things to think, but please keep what I said on the backburner in case there ever comes a day when you need the validation. Your post indicated that his attitude is bothering you, enough for you to post about it and ask for advice on what you can do or say. The thing is that you cannot control his emotions and thoughts. If he is convinced that you did certain things completely within your control, then there is nothing you can do or say to change his mind, because he is already expressing that he does not trust or believe you. And that spells trouble for a relationship. If it gets too toxic and you need to leave, or if the relationship goes south in general at some point, you should know that you were never in control of his emotions or thoughts, and that you did not 'fail'.