"Cas!" Dean yelled as he fought of what seemed like an army of demons. He knew he shouldn't call the angel, but he missed him so much. He'd flown off a few days prior, to 'sort out his feelings.
Cas was in love with Dean, when he was down in hell rebuilding the elder Winchester's soul, they had fallen in love. Somehow, when he had dragged Dean up through the bowels he'd let all memory of the time they had shared.
He needed time away, time to get his bearings together. He needed to find a way to either stop loving Dean or get the man to remember. The feeling of being near Dean and not being able to be with him the way they where in hell killed Castiel every second they spend together.
Cas knew it was stupid but he always felt as if standing too close to Dean or invading his personal space would will Dean to remember. When he stared at Dean, he wasn't counting his freckles like everyone thought , for he already knew how many. 207 to be exact. No, he was willing Dean to remember sending memories of all their times in hell to the one that had his heart unknowingly.
He didn't want to mess with Dean in such a way that he knew he'd need to in order for the Winchester to remember the love they shared for each other. Therefore he tried to leave it alone, he tried to forget Dean and the times they shared. It hurt like nothing he'd ever known. He was hiding in his favorite part of the world hoping to hide from his heartache, but I'm yet it still found him.
As the tears started to fall he heard his name being called from the man who caused him such pain. He had the thought of leaving Dean to fend for himself. That was until he heard it again, this time more desperate.
He quickly flew from the field, and to the Winchester boys. They seemed to be fighting off 100+ demons on their own. As Cas flew down to help them, Dean got distracted watching his forgotten soulmate fly into action.
He didn't understand the feelings he had, like he knew the angel forever, but he knew he hadn't. He didn't mind all that much when Cas stood to close closet stared at him. It just made him wonder why his heart always sped up when the angel was near.
This was one of the worst times to get distracted though. For the nearest demon stabbed the man, and held him close and he bled. By the time Cas got there, he was nearly dead. Cas slaughtered the nearest 10 demons and focused on Dean.
Little did he know, the demons had an angel blade. When he healed Dean one came up behind him stabbing him in the lung, letting him suffer before drowning in his own blood.
When the angel looked down at Dean he smiled, he knew he had to do it. He placed his hand on the handprint seared into Dean's shoulder and cleared the wall he'd built in his mind. Watching as Dean sat bold upright face to face with whom he now remembered was his lover.
Dean seen the blood pouring down his angels back. He panicked a he ripped his shirt up and over his head and pressed it to the huge gaping wound. Dean knew he was losing Cas just as he learned the truth.
In the last minutes, Cas knew he was dying. He knew what was to come, and tried pushing Dean out of the way. The elder Winchester thought he just didn't want him to see him take his last shuddering breath.
When the angels last breath exited his body, Dean felt a burning pain across his chest. One he knew would leave large scars. When he looked down he could see the scorched black feather burns of Castiel's wings seared across his skin.
He cried not from the pain of his physical form, but pain from losing the love of his life, that he'd only just learned he loved.
As the months passed Dean would look into his closet and see the trench coat his angel always wore. The only thing he had left. It still hurt every time he thought of the angel he'd lost in battle, but he'd get through and he'd keep fighting for the angel he loved more than life.