Dean woke up.

"Shit,".

This wasn't a normal hangover. This was a heat hangover. His body was sore and used. He knew this feeling too well. He wasn't able to pick up his suppressants because of a three week werewolf hunting trip. He knew his heat was going to hit hard so he told Sam and Jack he wasn't feeling well and to leave him alone. He's done this before and probably will have to do it again. If only his stupid suppressants had a longer shelf life. He would just hide them in baby but of course he couldn't be that lucky.

His body ached.

"Son of a bitch," he rubbed his lower back. He hadn't felt this way since he spent one of his heats with Crowley while he had the Mark of Cain. That was a problem he didn't want to get into again.

So. He spent his heat with someone. Who? He closed his eyes and tried to remember if he pulled some beta off the street again or if, god forbid, Sam or Jack found him and went out and brought him some Alpha.

Yeah. No one knew that Dean is... an omega. It wasn't fair. His dad: Alpha. Sam: Alpha. Mom: Beta. Why did he have to be an omega. And a "prized, and rare" male omega at that. When his secondary gender presented in middle school as omega, he was told to keep it a secret.

"Damn heat haze," he couldn't remember what happened. He knew he was with someone. His heats alone are terrible and he feels like an even worse hangover. But he felt satisfied and full of seed. He would have to go and pick up some omegan plan B; if it was even legal in Kansas.

He looked around his room for a sign of anyone. Nothing. He sniffed the air. He could smell someone but couldn't place the scent.

"Screw this," he stood up and stretched. He felt slick and cum poured out of his slit. He would never admit it but he loved the feeling. He turned to his bed and started sniffing the sheets. The scent. It was so familiar but he couldn't place it. Moss and old books. He's smelled it before. He knows that scent. He loves that scent. He snapped his fingers trying to remember who it was.

Suddenly the door opened. Dean quickly grabbed his blanket, covering his junk. A dark brown haired, blue eyed, trench coat wearing man walked in. It hit him. It was Cas. That was Castiel's scent. He couldn't move. It couldn't be true. Did his stupid inner omega go after his... crush?

Cas looked at Dean. He smiled with a sigh.

"One minute Dean. Your Alphas here. Just had to do something," his alpha? That sent a shiver down to his groin. Cas started taking off his coat. Then his shirt. Dean had never seen Cas undressed. Wait- Cas is an Alpha? Or at least his vessel is? Cas placed his shirt and coat on Deans desk and walked over to Dean. He gently placed his hand on Deans cheek and kissed him. He pushed his tongue past Deans lips. Then came his scent. Cas's' scent became stronger. Something was mixed with it... an arousal pheromone? Dean inhaled the scent. It was intoxicating to him.

Deans heart raced as his face became flush. He started breathing heavily into Cas's' mouth. Cas forcefully pushed a shocked Dean on the bed. He started unbuckling his pants. Dean felt a growing heat in his lower abdomen; slick started oozing from him. His brain wasn't working. Seeing Cas like this- shirtless, towering over him, unbuckling his belt. It made him wet. He had liked Cas for a while now but never would have dreamed of sleeping with him. He couldn't. He was his friend!

Castiel leaned over Dean and started kissing his neck.

"Cas-" Dean uttered.

"Alphas here," Cas whispered between kisses, "your Alphas here," Cas's' low voice right near his ear made him shiver.

"Cas," he shook. He couldn't do it. He couldn't stop himself. "Alpha," he whined quietly. Suddenly Dean realized what Cas was doing. He was sucking on his scent gland, loosening the muscles. Cas wouldn't be able to bond with him without being locked together and him climaxing but his heart dropped anyways.

"Cas wait!" He panicked, "Cas!" He pushed the angel off. Cas looked shocked as he stumbled backwards off of Dean.

"You're... back to normal?" He asked. Dean rubbed his neck.

"Yeah," He sighed, "thought you were going to try to bond with me," Cas said nothing. He wouldn't mind being bonded with him, he would love it, but it was so sudden it frightened him. Dean covered himself again. He rubbed his face.

Cas started putting his clothes back on.

"Your bonds last for your entire life,". Dean nodded. There was a silence as Cas dressed. Deans body started to relax as Castiel clothed himself.

"Can you tell me what happened?" Dean asked. Cas look down at him. He thought for a moment.

"I came to your room because Sam said you were sick. You were- asking me to help you. You said you needed an alpha. I just helped you through your heat. Fed you, watered you, and had sex with you," Dean rolled his eyes.

"Great," he sighed heavily. "Look- Cas? You can't- you can't tell anyone about my heat,".

"Why not?" Cas asked, "there's nothing to be ashamed about. Every omega goes through heats. I'm sure Sam and Jack would understand that you didn't know your heat,".

"No Cas. You don't understand. They don't know I'm an omega," Cas's' eyes widened as he started to understand. "Sam doesn't know?" Dean sighed.

"No one. Except a few dead people... and now you,".

"Are you ashamed of being an omega? Omegas were made to be prized and loved. They were created to be pampered,".

"That's utter bullshit," Dean looked straight into Cas's eyes, "Omegas are looked down on. Treated as pup machines. Thrown to omegan houses after we're dried out. Or even worse put into a whore house. All we are good for is screwing and having pups. It's worse for me because I'm a male omega. People want me because I'm rare. Not because I'm awesome," that made Cas smile.

"But Sam is different. He's your brother,".

"Exactly. If he finds out he'll start smothering me. Over protecting me like I'm some fragile object,"

"You're far from fragile," Cas smiled gently at him.

"Plus since dad's dead he can sell me off for a dowry. And I'll be damned if I end up some rich guys arm candy," he let his head slump down, "he doesn't even know I'm bisexual,"

"Bisexual omega? Is there anything else you want to tell me?"

"I slept with Crowley," Dean smirked thinking he would think it was a joke.

"I knew that," Cas nodded before leaving the room.

"Cas?" Dean paused, " Are you serious? Cas! You knew?!"