Sam's dead, and Dean can't shut out the little voice in his head.

I wasn't the one that had to do it.

He knows he'll never be able to forgive himself for feeling just the tiniest bit relieved about that.

DUDE. SERIOUSLY. Wow, I hadn't even thought of that! Oh Dean, you are so screwed up it's not even funny. No surprise happy ending... *pets him*

I'm glad you finally decided to post this, WG. Short and very, very sharp.