Dear Dean,
How could you?! How could you just leave me like that?! You didn't want me hurt or sad but I can hurt Dean. I'm really hurt and I feel so alone and sad! If you were alive I'd punch you so hard. I could have helped you... BUt you're gone and I'm all alone writing you this letter. I've got your ashes in a jar on our dresser, this way you're always with me. I've decided to write you daily and put each letter in a box next to your urn. God I miss you Dean. I love you
Love, Castiel