A drunkin' Castiel comes to Dean one night and while the two boys are alone things take a surprising turn forcing the boys to come to terms with their feels for each other.
The angels have fallen. Castiel lost his grace, and is now a human. He experiences hunger, cold, need, but still pondered at the thought of love. Dean takes him under his wing and helps him understand his new way of life; every aspect. Even though his grace is lost, the affair between a man and an angel is forbidden...