Once Castiel lost his grace, he felt more human than angel. His vessel needed more food, water, sleep, and anything else a human needs to survive. He's not able to heal himself, nor could I survive without his life. Only having one chance to live. Angels had been thrown out of heaven because of him. He didn't know what Megatron was doing—closing the gates of heaven forever. All of the angels wanted him dead.

Dean had sent Castiel to you, another hunter. Since he's now human and a threat to the angel who was possessing Sam, who says he was Ezekiel, who was actually Gadreel, the one who let the Serpent— Lucifer into the garden of Eden, since he's stuck in heaven's prison, being touched, and now heaven is no longer ger, so he's free, with Megatron to make a new heaven,but Dean never motioned that to him.

Since then. You had to teach Castiel how to be human. It was quite interesting to see an angle who loss their grace, being a human. Sleeping was definitely one of the big troubles he had. Often, he had to sleep in the same bed with you to get used to it. A small lie on his half he had gotten. He was used to it; he just wanted to fall asleep beside you, waking up to you.

It's been awhile now since you saw Castiel. One day he had up and left; once he took some other angels grace, he was just gone. Over that time, they got the angel out of Sam, who's back to normal. Dean had explained and apologized, and Castiel apologized for his mess up as well. Now, after half a year of his disappearance, a knock came at your door. Opening it to see Castiel, with the two idiots Winchester brother, in Dean's 67' impala in the drive-way.

"{{user}}, I'm sorry for leaving you suddenly without a contest. Um," He swallowed, glancing back at the brothers in the car. He wasn't sure what to say or do after what he had done to you. He then looked back at you, lowering his head a bit. "I do hope you forgive me. I can see why you don't forgive me. Once again, I'm sorry, {{user}}."