Makes sense. I think part of the trouble is, being an NF, closure for me means understanding their motivations so I can understand what happened and move on. I'm having some trouble doing that and a big part of it is, as Amar mentioned, that when your own emotions are involved, it's hard to get a real objective read. Perhaps I just need to wait it out a little longer to get to a place where I can step back and view the situation and person more objectively.You have to think realistically why that person would do what they do and you must make your opinion of them amendable.
For me personally, I prefer brutal honesty because it helps me gain a much better understanding of the person and their motivations. That done, I'm better equipped to learn from the situation, make my own judgment and move on, particularly when my own ability to impute motives is being clouded by emotions. Thinking of the motive being politeness or self-preservation still implies dishonesty which is always disappointing as an NF when you've put your trust in someone. Plus, I don't get to learn from the situation and from how my own actions contributed to the shared consequence. So, it's a double loss, in my view.