When a curse renders Castiel all but human, it forces Dean to see the angel in a new light and to find that he may like the angel more than he lets on.

AU: They were complete opposites but they were two peas in a pod and always would be. Dean Winchester had no idea when he met the strange boy with the strange name for the first time how important he would become to him. It takes ten years of friendship, loss, heartbreak, and most of all love to realise how truly naive they were to believe that all they could have is friendship.