"You have no power over me," Sam said with a growl.

Cas narrowed his eyes. "You sure about that?" He asked as they started to glow blue. He raised his hand in in an instant, Sam was thrown across the room, bent over the desk. He went over, eyes still glowing, and leaned down. "I thought I didn't have any power over you, Sam?" He whispered huskily in his ear.

Sam tried to move, but Cas'grace was holding every single part of his body down. He struggled to get free, but it was no use. "Fuck you," he said through gritted teeth.

"You can't fuck me, but I will certainly fuck you."

Cas smirked and grabbed the waistband of Sam's pants. He pulled them and his boxers down and smirked. He slowly ran his hands down both of Sam's ass cheeks. He used his thumb to circle his hole, before pushing it into him, his smirk never leaving his face.

Sam whimpered softly and tried to buck his hips back, but couldn't. The only part of his body that he could move was his head.

Cas grinned when he heard Sam whimper. "Little bitch," he muttered, bending over to suck on his neck. "You're just a little bitch, aren't you?"

Sam let out a soft moan and moved his head to give Cas more access to his neck. He moaned again when he felt Cas add another finger. "Please..."

"What? What was that, boy?" Cas asked, pulling away from his neck. With his free hand, he grabbed Sam's hair and turned his head to him. "What are you saying please for, boy?"

"I-I want you..." Sam panted out softly, looking up into his blue eyes.

"What do you want from me?"

"I want-want your cock...please...please!"

Cas grinned and let go of his hair. He moved away and stood behind Sam, still working his fingers. He released the restraints he had on him and pulled out his fingers a few seconds after. He flipped Sam over on to his back and pressed closer to him. He dropped his pants and boxers and kicked them off.

Sam pulled his legs up higher as he looked up at Cas with pleading eyes. He opened his mouth to say something, but threw his head back and arched his back when he felt Cas start to push into him.

Cas gritted his teeth at the feeling of Sam's tight heat clenching around him. He looked down at Sam, whose back was against the table again. He pushed all the way into him, then paused, adjusting himself and Sam. He held the back of Sam's knees, pushing his legs higher, pretty much bending him in half.

Sam looked up at Cas, his mouth open and panting already. Cas leaned down and pressed his lips against Sam's, who put his hand around Cas' neck and brought him closer.

Cas kept kissing Sam as he started to thrust into him, slowly at first, then faster and faster.

Sam moaned against Cas' lips and held on to him tightly. He closed his eyes and arched his back off the desk again.

Throughout the room, the only sounds that could be heard was muffled moans and skin hitting skin. The desk shook under the weight of them both and Sam was surprised it didn't break under them.

Sam put his arms around Cas and dug his nails into his back. Cas thrusted into him a few more times, and he-

"Sammy! Wake up!"

Sam jumped awake and lifted his head off the desk. He looked around and found himself in his room, Dean standing at his door. "W-What?"

"Jesus, Sammy, I thought you actually had someone in here. You were making a lot of noise, considering the fact that you were just dreaming."

Sam blushed darkly and calmed his beating heart. "S-Shut up.."

Dean laughed. "I found a case. I'll be in the library when you're...calmed." He smirked and left, closing Sam's door.

Sam gulped and looked around the room. "Cas?" He called out quietly. He waited for a reply or the sound of wings, but heard nothing. He sighed and got up, then went into his bathroom.

Cas stood in the corner of Sam's room, invisible to him and his brother. He had a pleased smirk on his face as he watched Sam go into the bathroom, the bulge in his pants very noticeable. Dream manipulation is a wonderful power to have, he thought before flying off.