((So I added more to this chapter guys, hope you like it))

Cas' POV

I softly rocked with Greyson, Dean was going to talk to Gabe about Michael taking the Mark, I wasn't thrilled with the idea, but I didn't know any other way to change things. I looked up as I heard Dean come in the room, and I smiled at first, until he grabbed his duffel bag and started packing his clothes, "Dean.. what's going on?"

Dean looked over at me, as if he hadn't realized I was there, "Gabe doesn't think it's a good idea… and I could tell you didn't either… With Gabe and Sam having Calissa, and you needing to worry about Greyson, I have decided to leave… It's best for everyone if I go. I don't want to hurt any of you, just.. just keep him safe Cas. I love you so much, and I am so happy for all the time we spent together, I am happy I got to know you Cas, and I got to have a son with you. Just promise me you will take care of him…"

I felt fear ripple through me and I shook my head, "No Dean you can't go… I need you around, Greyson needs his father"

Dean smiles a little sadly, "I know, but he has a really amazing Papa in you Cas. I can't be around him, while I have this thing on my arm. And I swore that I wouldn't go through with this unless everyone was on board. I love you so much Cas," He came over and slowly kissed me. Then he pulled away and kissed Greyson's head ever so softly, "You listen to your Papa buddy. Daddy has to go away for a while okay," Tears welled up in Greyson's eyes and he reached out for Dean, Dean carefully took him off my lap and hugged him, "Shh, it's okay buddy. Don't cry okay, Daddy will always be with you kiddo" He carefully took of the Amulet Sam had given him when they were kids, and that had once been thrown away but then Chuck had given it back, then he put it around Greyson's neck, "This way daddy is always with you buddy. I love you so much"

Dean gave Greyson one last squeeze, and I felt my chest tightening, and I held my breath. I couldn't believe that Dean was leaving, he carefully handed Greyson back to me before kissing me deeply and resting his forehead against mine. "Dean you don't have to…"

Dean's beautiful green eyes locked with mine and he nodded, "I do Cas. I can't take the risk of hurting you or Greyson, or Sammy, or Gabe or their daughter. I know it hurts Cas, this is killing me but I can't hurt you again. I know you believe in me but I just don't anymore. Keep everyone safe, I love you so much." I stood there, in shock as Dean packed his clothes, leaving a few of his things that he knew I liked to sometimes wear. He then kissed me one more time, as well as a crying Greyson on the head before leaving.

I stood there in shock, and I wanted to collapse, but I needed to worry about calming Greyson down. I hugged him close to me and rubbed his back, "Shhh, shh its okay Greyson."

I let my wings manifest, hoping to calm him some but they did nothing this time, he just sobbed for Dean, and I didn't know how to calm him down. Because this time Dean wasn't going to be coming back, I didn't know what to tell him to make him calm down, so finally I just carefully pressed two fingers to his head and made him sleep. I hated using my powers on him but I didn't know what else to do. I carefully laid Greyson in his crib before staring around the room that seemed so barren and just like another room in the bunker now. I laid down in the bed and closed my eyes and started crying, after a few hours I heard a gently knock on the door. I slowly forced myself out of the bed, wearing on of Dean's plain black tshirts, it was such a simple article of clothing but it was my favorite. I opened the door to see Sam standing there looking pretty broken up himself, and I bit my lip and forced out, "Hello Sam"

Sam smiled a little warmly, "Hey Cas.. how are you doing…"

I shook my head and softly turned to lay back down on Dean and I's bed, "That is a stupid question Sam"

Sam sighed and nodded, "I know Cas… I wish I knew what to say…"

I ran my hands through my hair, "There is nothing you can say Sam… Dean left, he left me and his son…" Sam placed his hand on my shoulder trying to comfort me but I just shrugged it off, "You've got Gabe… and Calissa, just leave me alone Sam…"

Sam sighed, "Cas I know your mad right now… let me help if I can…"

I pulled away and closed my eyes, "You can't help… Dean left and I have no idea where to find him unless he calls for me… and I have a feeling he just won't so now I have lost him… I don't want to do this without him okay"

Sam sighed a little "Don't blame this on yourself Cas… he was trying to protect us"

I closed my eyes, "I swear if I hear that one more time I am going to go insane. Just please leave me alone for now Sam"

Sam nodded, "Gabe and I are for you if you need anything Cas…"

I closed my eyes and nodded, and laid down on the bed as Sam left the room. I pulled out my phone and looked at Dean's number, deciding to send him a text.

Dean… I wish you would have stayed… I would have kept you safe… I don't know how but I would have kept us safe, I love you Dean. Please Dean don't do anything irrational, no matter what I still care about you. I miss you so much Dean, so does Greyson. I had no choice but to use my powers to calm him down… Try to stay safe Dean

Love Cas

I waited for an hour with no reply before giving up and watching Greyson sleeping, and I noticed he whimpered in his sleep and had rolled onto his stomach again. He whined and kept rolling his shoulders, obviously uncomfortable. I softly got up and rubbed his back gently between his shoulder blades, knowing his wings were trying to grow and manifest. I used my grace to help his wings manifest, and suddenly gorgeous iridescent black wings manifested from his back, they shined green from one direction and blue in another. Greyson whimpered a little before he settled down, his wings wrapping around him. I smiled and watched him sleeping, and knew that his grace wouldn't be able to hide his wings for another 6 months. I softly ran my hand over his wings and he made a gurgling happy noise his wings fluttering gently. I smiled, then laid down and closed my eyes trying to search for Dean but with the carvings on his ribs.

"The carvings on Dean's ribs has been broken and I can sense where he is and that he is in pain, I need to go to him, can you please watch Greyson?" I said as quickly as I could get the words out.

Sam nodded and carefully took Greyson, of course noticing his wings but before he could have the chance to ask me I disappeared and went to Dean. As soon as I arrived I saw Dean laying in a pool of blood, with a blade in his chest and my heart broke, I went to Dean's side and he was sputtering blood and shaking, "Dean! What happened oh my god Dean…?"

Dean whimpered a little bit and then his eyes connected with me and he smiled a little, "C…cas, thought you'd find me once t..the warding was gone. M..made sure t..to do it so it would break t…the warding.."

I felt tears rush to my eyes and I shook my head, "Dean what the hell did you do? Oh Dean what were you thinking!"

I started to heal him but he stopped me by grabbing my hands tightly, "N…No Cas don't. If I am dead I can't hurt anyone. Just leave it, let me go Cas." He started choking and I could feel his life draining slowly, and I shook my head crying.

"Please Dean… please let me heal you…" I closed my eyes crying and holding Dean's hand tightly.

Dean smiled a little sadly coughed painfully, "Need you to promise me you will take care of Greyson kay, promise."

I nodded shakily, "Of course I will Dean. Please please Dean….let me heal you"

He shook his head and cupped my cheek, "Nah Cas. It's time for me."

Dean coughed roughly spitting up blood, then his breathing stopped completely. I closed my eyes crying and shook my head, "No… no no Dean! DEAN!"

I looked into his eyes and they no longer shined with life, his gorgeous emerald green eyes, glazed over and dull, I closed my eyes crying. I heard Gabe call for me and I held tightly to Dean and flew back to Dean's room and sealed it off so I could just be alone as I held Dean's limp form.

((Okayyy sooo I had an idea and though of this. I will give you another chapter of what happened on Dean's end. Sorry my readers.))