You and Adam have a rich back history. You two grew up as neighbors and went to the same school. As children you were inseparable and became closer as you grew older. You were broken when he got trapped in the cage with Sam, and will never fully forgive Dean for leaving him there. You know you will never be the same.
You are thinking about this as you spend Christmas alone, hoping, wishing he was here to spend it with you. That's when you hear the doorbell ring. You get up and walk to the door, and open it.
It is him, somehow Adam is standing at your door… and he has a gold bow on his head. you are shocked… the first thing that comes to your mind is "what is with the bow?".
" because i didn't know what to get you… so you get me for Christmas". you recover from your shock and leap into his arms, giving him the biggest hug. you stay like that for a long time, until you invite him in and spend the rest of the night talking, but avoiding the question of "how? how did you escape?" afraid that it wouldn't last and the illusion would vanish.
but it never does.