You sat across from Dean at the table. He watched you carefully as you bit the inside of your lip. He had his hands folded on the table, his eyes concentrated on you. "So let me get this straight, I will die, by Metadouche himself, then turn into a demon because of a 'Mark of Cain'?" He asks and you reply with a small nod. "That's what I saw in my vision." You say and sit back a bit. "That's all I saw. I swear." You say and fold your arms. He nods and stands up with a chuckle. "You realize that's probably not going to happen?" He says with a small smile.
A few months later you had stayed with the winchesters. You had watched Dean go through the torture of finding the Mark of Cain and waiting up for him countless night while he sat, eyes glued to the laptop, tracking Abaddon. You were there when he came back from killing her, offering him hugs and a warm calming shower. You were there when Kevin died and when angels commuted suicide in Cas's name. You had seen the different man Dean had become, the stress and weight bearing him down.
You were there when Dean locked you in the bunker while sam and him went to find Metatron. Dean was so set on killing that douche once and for all, you knew he wouldn't be the same when he came back.
You were there when sam carried Dean into the bunker, covered in blood with a large hole in his chest. You had collapsed into a puddle of sobs and screams while sam laid him down in his own room. You stayed by deans side and fell asleep that night. By morning you woke up, but deans bed was emptied.
Sam had become obsessed with finding Dean. You watched sam become the weighed down man now. You watched as sam had the same worry and stress on his Dean had once had.
One night you went out for a drink after you and sam had gotten in a fight. You sat down at the bar and missed Dean, the old Dean you had fallen in love with. You cried silently as you downed drink after drink through the empty night.
"Y/n." A voice sounded from behind. You turned around, have expecting it to be Sam but froze when you saw Crowley...and Dean. "Oh god." You breathed out and covered your mouth. "I believe you mean," Dean started as his eyes turned a haunting black, a smirk on his lips. "Oh demon."