It sucks, I feel with you.
But FWIW this is also part of a legitimate and kind of linear process of dealing with a frustrated need. We go through it when we want something but can't have it, from when kids don't get the candy they want, to the process adults go through when they loose a dear one.
1. First we'll be fighting the fact. Not accepting the outcome, refusing to have 'lost', still trying to get one's way, if only in a minor matter. (i.e. "He / she HAS to understand me even when I don't understand myself, HAS to think the way I think about this, HAS to validate my point of view!)
2. At a point we give up fighting, forced to see it's futile. Then we feel anger about the frustrated need, in realisation that it will not be fulfilled. Blame-game. Analysing the causes and effects, pinning injustice and hurt.
3. But eventually we'll have to let this outward focus shift from the injustice of the causes to coming to terms with the abscence of the desired object. There were reasons we desired it and its absence leaves a wound in us. Now we're mourning the actual loss, and the nature of external or internal events that caused it become relatively unimportant, since no matter what they were, it's you that have to come to terms with the outcome. We feel grief and sadness. Possibly isolate ourselves, roll into a featus position or cry by an understanding shoulder. We say goodbye to the desired piece of candy or the loved one or the dream of being understood etc.
4. When the magnitude of the loss has been incorporated and dealt with in you, you can begin to look outwards again. And see new things.
In this case you'll probably have to let go of the desire to control his internal experience of the events and just focus on your own. It doesn't necessarily mean you didn't communicate well. He may have his own reasons to protect his version of what happened. That's outside your influence and control now.
You'll have to validate yourself, not be dependent on controlling his understanding. It's good to try once or twice to merge the two private storylines, but it's an "extra" and it's not objectively vital to your future life and handling of emotions. So, at some point you'll have to stop banging your head against the wall of outer causes.
Accept the loss of control over others and over your own feelings, and grieve.
And though it may initially feel like a defeat to give up control, you'll learn to differentiate yourself from the other and you'll grow emotionally doing this.
Aw, and I KNOW it's easier said than done! But you'll get there..