Cas's POV

They searched the entire camp for him. Asked everyone if they had seen him. Of course. Nobody had. Not even Bobby. The three of them split up to look for him. Cas went back to Dean's cabin to see if he left any clues as to where he might have gone. He opened the door, and there was Dean. Sitting on his bed. Covered in blood, First Blade in hand. "Dean?" He slowly took a step towards him. Dean slowly looked up at him. The Blade dropped to the floor and Dean stood up. Backing away from Cas til his back hit the wall. He put his hand up. "Cas..." Cas stopped. He looked terrified.

"What happened?"

"I...I don't know. I woke up and you were gone. And...Something told me to get up...I blacked out for a minute then when I came too..." He let himself sink to the floor. Cas went to his side. Dean curled up. Putting his arms around his legs. "I killed them Cas." He looked up at Cas. "They were people. Survivors. Looking for a safe place." He put his head on his arms. Cas bowed his head and put his arm around Dean. Dean pushed him away. "You have to stay away from me. All of you."

"Dean..."

"No Cas. You have to. You, Bobby, Sam...everyone." He stood up and grabbed the First Blade. He walked over to the door then stopped. He didn't even look back when he spoke. "I Don't want to hurt you" He walked out. Closing the door behind him. Leaving Cas sitting there on the floor.

Dean's POV

He needed to find Lucifer and get this over. The only way he could find him was if he let the Mark lead him right to Lucifer. Which wouldn't be easy because Lucifer never stayed put long enough to get a good read on. He had been searching for what felt like days, but it was only two days since he left the camp. He felt bad about leaving Cas after just finding him. He knew Cas would show up sooner or later. He tried to keep the Mark in check by killing only Croats, but the more he killed, the more he wanted to kill not only Croats, but people as well. He just needed to kill Lucifer and get back to his own time with Cas. Then they can figure out how to get this thing off...after he killed Cain.

He was sitting next to the small fire he had made. A small bucket of water was next to it in case he needed to put it out quickly. He threw a small stick in the fire. "Dean." He didn't look away from the fire. "Followed the trail I'm guessing." Cas stepped into the light of the fire. "The trail of dead infected? Yes. It wasn't a very hard trail to follow." Cas sat down next to the fire across from Dean. Dean still didn't look at him. "Whatever you're trying to do Cas, just stop. Go back to the camp. And after I kill Lucifer, we can go home." He clenched his jaw at the thought.

"Dean, this is suicide."

"No cas, it's really not. Killing Lucifer with this will be easier than when I was an angel."

Cas's eyes flickered looking up at Dean. Dean stood up and put out the fire. "Go back Cas." He walked right past him. Not looking at him once. He was doing this for his own good. He didn't want to see Cas get hurt. He knew if he became too far gone, he would hurt Cas himself. He didn't want that. Cas grabbed Dean's arm and turned him around. "Dean..."

"Cas. This mark is already starting to take over. I'm already getting urges to kill. And I'm going to hold those urges in until I find Lucifer and kill him. Then we go home." He finally looked at Cas. His green eyes piercing into Cas's blue. "You're still you." Dean's expression softened. He looked down and signed. "For the moment." Cas place a finger under Dean's chin and lifted his head. Looking into Dean's eyes. Dean put his one hand on Cas's waist and the other on the back of his neck. Sliding his hand up, he laced his fingers through Cas's hair. He pulled Cas closer so their chests were touching. Dean rested his forehead on Cas's and closed his eyes. "I'm still me." He whispered to Cas. Cas put one hand on Dean's back and the other on his chest. Dean brushed his lips against Cas's, smiling. He pulled Cas closer then gently kissed him, letting his lips linger for a moment. Cas put both arms around Dean and locked him in place. Dean chuckled. Opening his eyes to look at Cas.

He knew there were two reasons why he did that. One: He didn't want the moment to end. Two: He knew the moment would end and Dean would leave. So he decided to make it a moment neither of them would forget. He put both hands under Cas's shirt and slid his hand up to his chest. Then pulled his shirt over his head. Sliding one hand down his back he kissed him. Pausing only to take his own shirt off. Cas looked at him. Running his fingers down Dean's arm and chest. Dean placed his hand on Cas's face and kissed him. With his free he slid it down the waist of his pants. He unbuttoned them effortlessly. He unzipped them. Cas tried to reach for Dean's pants but Dean grabbed his hands and gently laid Cas down on his back. Cas grabbed a fist full of hair as Dean unbuttoned his jeans with one hand and slid them down to his knees. He used his legs to get them the rest of the way off. He got on his knees and pulled Cas's boxer off, then his own. He looked at Cas, who was staring at him. He knew what Cas was thinking because he was thinking the same thing. "Beautiful." He smiled.

They laid there for what seemed like hours. He didn't want to ruin the moment by saying he had to leave so he just looked at the night sky with Cas. Since Cas never slept, he wouldn't be able to leave while he was out. "We should do this more often." Cas broke the silence. Dean smiled and looked at him. "Which part?" Cas rolled his eyes and smiled. Dean propped himself up on an elbow and moved closer to Cas. "All of it." He replied. Dean nodded. "We will when we get home. All the sex and stargazing you want." He promised. Cas chuckled. Dean rolled over and grabbed his shirt and his favorite green jacket. "Cas..." He put his shirt on and looked at him. Cas continued to look at the sky. "I know." They both rose to their feet. Cas put his shirt on. "I'll tell Sam I couldn't find you. Which will make him worry more since this morning you could barely talk let alone get out of bed."

"No, tell him you saw me but I got away. Tell him I told you I need to do this alone. I know that kid. He'll still worry but he'll know for the moment I'm alright."

"And are you alright?"

Dean put his jacket on and looked at him. "Look Cas, I don't know what this will do to me and I don't know how far gone I'll be when I get back. So if need be when we get home, I need you to take me down." Cas shook his head. Dean closed the gap between them. "Cas. You and I both know I may very well turn into something I've been hunting my whole life: A monster. And if that happens..."

"Dean..."

"Just...please Cas. I don't want this Mark controlling me. But if I do go darkside, I need you to pull the trigger."

I would like to thank Wisegirldemigodpercylover for her reviews! You're the best!