Think of all those monsters watching the auction who just got to watch a livestream of Dean being all Dean-y and killing a dude to save Sam. 

Donna’s not talking to Doug like she usually does and Doug is worried. Sam isn’t talking to Dean like he usually does and Dean is worried. Love me some parallels. 

OH MY GOD. Dean noticing Sam’s in a dark place and then telling him he’ll be there for him just like Sam was for Dean?? MY HEART.