No joke. I just downloaded the episode and I'm watching that scene over and over.

"I was looking after Sammy like you told me to."

"I never wanted this...never. I love you. You're my boy. I can't watch you go to hell, Dean."

"I'm sorry...."

The whole time Dean is pacing and panting, and the "I'm sorry" really got to me. He sounded like a little boy, like daddy's boy who knows he's in trouble.

Yeah, my mind went right to daddycest too. :-)