Most heartbreaking part of Sam's demon detox

• His young self accusing him of letting Jess die because he went off with Dean, then flipping yellow demon eyes

• Mama Winchester telling Sam that he has to do whatever it takes, that Dean is weak, and that he has to make her death mean something

• Figment Dean telling Sam he's a monster and he means nothing to him.

• Bobby confronting Sam, and Sam walking into the shotgun, then positioning it against his heart.

• Sam giving in to the urge and drinking Ruby's blood again.

• Sam saying exactly the wrong thing at the wrong time to push Dean's buttons and drive them apart.