Dean was so hovery in AHBL2, and then Dean's back from HELL and all he gets is a hug and a 'don't wait up'? WORD WORD WORD WOOOOOORRRRRD.

Sammy. Honey. I do like you, and I know you must have been through hell during those four months without your brother, and needed to hold on to SOMEONE. But, see, Dean LITERALLY went through hell, so how about you show HIM a little love now? Ok??

I hope there's a suitable explanation as well.