Two weeks after Dean saved Sam from 'sacrificing' himself, the two brothers found themselves hiding out in Bobby's old place in Sioux Falls. Sam was fast asleep upstairs after taking his medication from the hospital and Dean was just finishing off a bottle of beer on the couch downstairs.

Nothing…nothing in this damn book refers to what happens if all the angels fall, Dean thought angrily slamming the book shut and sliding it down the table.

He'd shoved a little too hard and the book slid off the coffee table and onto the wooden floor. "Well shit," mumbled Dean standing to pick it up, but before he made it even a foot away from the book, someone bent down and picked it up off the floor.

Dean knew those hands all too well and froze when they appeared before him.

Cas held the book in his hands and was looking down at it absently when Dean looked up, "Cas!" exclaimed Dean suddenly.

The last Dean had seen Cas was when he left him to go check on things upstairs. That was before Dean saw thousands of angels falling from heaven, their wings burning into nothing just before they fell to the earth.

Cas looked up slowly from the book and Dean's breath caught in his throat.

Cas didn't look any different from the last time Dean saw him…but then again, he looked nothing like the Cas he had seen last time. Cas's eyes were filled to the brim with tears and his cheeks were stained from older tears and smeared with spots of dirt.

The former angel parted his lips just barely before a broken sob escaped his throat. Cas dropped his head and shut his eyes as more tears flowed.

Dean was already moving and caught the book Cas was about to drop and tossed it on the couch, "Cas…hey. Hey man…it's…I'm so sorry Cas," he said gripping Castiel's shoulders.

Castiel sobbed again and leant into Dean's hold. After a moment, Cas looked up at his friend with red eyes, "It's…they're all…"

Dean nodded and led Castiel to the couch, "I know…I saw." Dean waited quietly as Cas wiped the tears away and bit his lip, "Did you…where you?" he paused too afraid to ask.

Cas shook his head seeming to know exactly what Dean wanted to know, "Metatron took my grace and used it for the spell, then he sent me to earth. I still have my memories."

Dean let out the breath he hadn't realized he was holding and rubbed the back of his neck, "So what about the others?"

Cas stayed silent a moment longer then looked up at him, "They fell. They won't remember anything." Cas was surprisingly calm all of a sudden and glanced around the room, "I wasn't sure you'd still be here. I almost went to the bunker but…I have no money for a ride and just thought I'd wait here a while."

Dean huffed and gripped Castiel's shoulder again, "I'm glad you did, we were going to head out tomorrow. You were almost too late."

Cas nodded quietly then looked around again, this time as if he were looking for something, "Where is Sam?"

Dean nodded toward the stairs, "Upstairs, sleeping. I almost didn't make it to him in time Cas. I stopped him but…we got back from the hospital yesterday."

Cas frowned and looked down at his dirty hands, "What now?"

Dean sighed and shook his head, "I was just about to ask you the same question."

After a moment Cas finally looked up, "What's my name Dean?"

Dean looked at him confused, "What are you talking about…Cas."

Castiel shook his head and turned his body to face him, "No…my last name?"

Dean raised a brow, "Uh…Cas, I don't think you have a last name."

Cas frowned and turned away again, "I need a last name."

"Why? What the hell is all this about a last name?" asked Dean very confused.

"I want a last name. Metatron told me to get married and have children…but I can't unless I have a last name," said Castiel quietly.

"Uh Cas, since when do you want to have a family?" asked Dean a little shakily. He swallowed and dropped his hand from his shoulder.

Cas continued to look down, "I've always wanted a family, and for the longest time I thought I had one…but they were never my family Dean…you were." He looked up at him then with a plain look, "And for once Dean…I finally can."

Dean stared at him in shock, "Wh-what?"

Cas scooted closer on the couch and stared him in the eyes. They were just inches apart and Dean sucked in a breath, "I want to be a part of your family Dean Winchester."

Dean nearly choked and had to swallow hard, "Uh…yeah, uh Cas, you are a part of the family. You're one of us…and you have been for a long while," he finally said.

Cas's eyes brightened slightly, "I have?"

Dean nodded, "Yeah man."

After a few intense seconds, Cas smiled and moved back to the end of the couch, "So does that mean I'm a Winchester?"

Dean raised both brows and opened his mouth then shut it again before swallowing, "Yeah…I guess it does."

Cas's smile widened and he seemed to forget about everything else until he looked down at his hands, "Thank you Dean…that really means a lot to me."

Cas stood and shed his coat, hanging it on the back of the couch and unbuttoned his shirt revealing a filthy human vessel beneath. He was about to unbutton his trousers when Dean swallowed the lump in his throat and stood gripping Cas's hands, "Cas…what the hell are you doing?"

Cas looked up at him confused, "I thought we were family now. I was watching that Days of Our Lives documentary and they did this. Isn't this what you do when you become a family?"

Dean huffed and glanced down at their hands, what the hell, he thought before glancing up at him again and looping a finger through a belt loop in Cas's pants, "Why don't you let me do that?"