How he really felt about you... what your colleagues really think about your capabilities... how pretty your friends really think you are... what people say when you're not around. What would have actually happened in this scenario if you hadn't have intervened? Would it have been as bad as you think or would it maybe have worked out okay in the end after all? If you could say, have a book with two columns and the left column had a version of what you believe whilst the right had the actual realistic version... would you read it? Basically, are there some things where being oblivious is okay... or is the cold hard truth always essential?