Castiel's POV
I let out the loudest scream, so loud my throat would definitely hurt later, I was laying in a puddle of my own sweat. I curled up into a ball in my bed, I was shaking so hard, I thought I might break apart. That was the worst nightmare I had since I fell. I heard frantic foot steps running down the hall of the bunker. Dean bursted into the room, gun in hand. He looked at me and sighed and lightly put his gun on my dresser, which mostly consisted of Dean's old clothes, since I just had a suit and a trench coat.
Dean walked over to my bed and sat down next to me, I pulled him into a tight hug, gripping the back of his shirt, while sobbing like a big baby, I was shaking worse then before.
"Don't leave me Dean, don't ever leave me again, please don't die on me" my words were muffled by how hard I was holding onto him, thankfully Dean didn't ask any questions, and hugged me back, while petting the back of my head.
"Shh, Cas I'm here, I'm not leaving, your my everything baby" He whispered into my ear, I sobbed some more into his shirt, shaking even more. Dean and I have been dating for a month but decided not to share a room, just yet. Sam doesn't know we are dating yet. We felt bad keeping it from him, but we thought it was for the best.
"Cas look at me, I'm here, I'm ok, I'm fine, Ok?" Dean said lifting my head up, I merely nodded.
"I just I don't want to lose you Dean"
"Hey, I'm not going any where"
"You could die at any moment on the hunts you go on with Sam, I'm scared of Sam coming back and telling me you were mutilated by a werewolf, or Bitten by a vampire, I can't have that Dean, I can't, I need you."
"Cas, I'm not going to die, I promise ok, and if it helps I'll take a break from hunting for a month or so"
"You'll really do that?" I said while looking up at him with puppy dog eyes.
"If it makes you stop hurting I'll do anything for you" He smiled at me and I hugged him tighter.
"Thank you" I said into his shirt.
"no problem Cas, you get some sleep alright" Before he could get up I grabbed his arm.
"Please stay" I say in a calm voice, he smiles and gets under the covers with me, I snuggle into him, and sleep a nightmare free sleep.