No, I understand what you mean. From his perspective Mizz isn't doing anything wrong - he already knew Bromm before you, probably intimately too, and he is genuinely putting you on a slow burn because he is actually interested in you, and he made you no promises of a closed relationship even as he admitted his interest.
But the way things are right now - they ignore the player's perspective on this situation completely and treat him as if he is unequivocally in the wrong for having his own feelings and expectations of Mizz. Not Rael, the player.
Rael might be cool with this, he is not me, he was born and raised in the far-off future of a different world, he does not have my sensibilities and expectations of people.
But I am the one playing the game. I am the one whose feelings are real.
And I do realize the difficulties of creating a vast branching experience like you are creating, and I know you don't have endless resources to iron out every little thing...
And, honestly, apart from this one particular experience, I've got nothing but praise for you, you're nailing it, truly. I am genuinely in awe at the scale of the story's branching. I tried to see all events for every character as the most obvious background paths, so I think I'm being objective when I say the game's been astonishingly amazing so far.
Which makes this particular event all the more disappointing because of how high the overall experience has been before it hit such a harrowing low. I feel like this is NOT one of those moments where you should just shrug it off and say that you only have two hands and can't cover all bases. I felt this way, and I'm hardly unique, so others will follow and be disappointed.
You must see that this needs at least a way for the player to make Rael be offended and not complicit in his own humiliation.