I don't think Sam realizes that Dean actually believes that. I think Sam thinks that Dean is kind of... reminding Sam of what Sam said to hurt Sam, if that makes any sense.

YES, it does make sense. And I can see that Sam would think that Dean thinks that he wouldn't save him. In Sam's mind, what he actually said, and what Dean believes are two completely different things, which makes this whole scenario that much more sad. Sam really needs to clarify his statements and get Dean to understand what he means. Sam tried to articulate his meaning when he first said it, but when Dean heard that Sam wouldn't save him, Dean just shut down emotionally and anything else Sam said didn't compute for Dean. Then, Sam with the loss of blood, you are right, Sam probably didn't even register that Dean said that.

I do need a brotherly bond fixing scene so badly, and for so many reasons, and I, like you, am skeptical that we will get one before the end of the season. I'm still hoping, but that hope is waning. No need to apologize about being cynical, didn't read it that way, and again, I am feeling much the same way, unfortunately.