Here's the third and last chapter. I hope you enjoy it and don't forget to review ;)
"Sam...Bobby?" Dean whispers. Where am I? He gazes around; there's nothing but a thick layer of fog. A chilly breeze makes him put his collar up.
Dean starts walking, running and then he stops. A soft voice calls his name. "H - hello?" Dean stammers.
He turns around, but it's all the same darkness. The voice is getting clearer now. And even though Dean can't see anything, he knows exactly who it is.
"Cas?" he asks hopefully. He turns around again and a bright light blinds him. He sees the silhouette of a man, just out of reach.
"Dean…" His voice echoes, "It's time to let me go…"
"No...I – I can't… not yet." Dean mutters.
" Some things were never meant to be forever, Dean."
"Cas…Please…"
"It's time to wake up, close your eyes." his voice slowly vanishing.
"When your time comes, we'll meet again…"
"No! Cas, don't go!"
"Close your eyes, Dean. Close your eyes…"
Dean wakes up, bathed in sweat. It was just a dream.
He sits up on his bed and stares blankly at Cas's trenchcoat - lying folded on the desk - lost in thoughts. Then he quickly gets up, picks up the trenchcoat and marches down to the basement.
It's so hard to lose the one you love, to finally have to say goodbye. You try to be strong but the pain keeps holding on and all you can do is cry.
Deep within your heart you know it's time to move on, when the fairy tale that you once knew is almost gone.
"I'll miss you and your freakin' trenchcoat." Dean mutteres to no one in particular.
He smiles and puts the trenchcoat in a wooden box. He places it on the top shelf with a tag that says 'Castiel'. He quickly wipes a tear from his cheek as he slowly walks away.
When he's back at the door, he turns around and smiles one more time. Right before he switches the light off he looks up and mumbles, barely hearable: "Goodbye Cas." and when he closes the door behind him, a piece of paper whirls down from nowhere, and lands on the floor of the now pitch-black storage room. There was a small text, written in a curly handwriting:
Technically, it's an overcoat.
I love you Dean. Always and forever.