Another chapter typed up on my phone. Forgive me for the mistakes.

...

Chapter 10- Omega

They were tied together. Mated and claimed properly.

Castiel laid his head on Dean's shoulder, breathing hard as his heat cooled. He didn't care that his own shoulder was bleeding or that there was a good chance Dean's fingers had left bruises where they had held him. All that mattered was coming down from his high.

The high that Dean had taken him to.

Kissing the top of Castiel's head, not caring if he got blood in the pup's hair, Dean adjusted his grip on his mate to move them. He didn't want to spend the length of his knot standing with Castiel's back against Sam's bedroom door. With more effort than he would ever admit, the Alpha carried his mate to the bed. Sitting on the edge, he payed back, bringing Castiel with him so that the Omega was straddling him. It wasn't perfect but it was better than where they had been before.

Goddess he loved the weight of his mate laying on top of him.

Castiel snuggled in closer, rubbing his cheek against Dean's shoulder, making happy, sated noises.

"How are you feeling?" Dean asked, placing another kiss into the pup's hair.

"Awesome." He let out a laugh. "You need to be on this level."

Dean felt another load of seed being released making Castiel sigh and wiggle against his Alpha's knot.

The mates laid together as Castiel's heat cooled enough for him to relax. His eyelids heavy with sleep.

So this was his heat. Maybe it wouldn't be too bad with Dean there to help him through it. How bad could it get?

"Get some sleep, Cas. Tomorrow will be worse, you'll need your energy." Dean rubbed his cheek against his mate's hair, his fingers running lightly up and down the Omega's spine.

"Gonna give it to me again, Alpha?" Castiel asked, trying to stop himself from yawning.

"Again and again until you can't take it anymore." Dean promised.

"Kay." And with that Castiel felt himself drifting off to sleep.

...

It was Hell. It had to be. How could it be anything other than the pit of damnation? Everything was just so hot!

Kicking all of the blankets to the floor, not wanting to feel anything against his skin, he hissed as the cool air hit his sweat soaked skin and hair. Sprawling against the sheets, he hoped it would help cool the heat that threatened to melt his very bones.

No such luck.

Groaning at the unpleasant sensations that we're coursing through his body, Castiel forced his eyes open.

The room was empty. The room was gone.

Another wave of heat hit him, sending fresh slick down his cheeks to pool on the bed.

Rolling onto his stomach, Castiel moaned, high pitched and needy. Where was Dean? He needed his mate!

"Dean!" The Omega whined, rising his hips in hopes of finding the Alpha he knew was not there. More slick slid down his thigh.

Biting his lip, the pup fought back the tears that had already began to escape. "Dean!"

There had to be something he could do to ease the Hell he was feeling until his Alpha came back. To ease the pain and pressure that had claimed his body.

He thought of Dean's fingers inside of him. It hadn't been the same as having his mate fill him but he couldn't deny it had felt good.

His heart was pounding in his chest. He had never done this before but he needed to do something. Closing his eyes and burying his face into Dean's pillow, Castiel reached behind and shoved a finger roughly inside with a muffled cry into the pillow.

With no rhythm or technique, he pounded into himself needing it to work. To take the edge off.

"Alpha!" He cried out, needing more than what he could give himself. He needed his mate. His Alpha. He needed Dean.

He tried to imagine that the fingers buried inside of his ass belonged to his mate instead of being his own. That they had the caring touch that Dean had instead of the rough and unforgiving feel his own had.

He heard the door open.

"Your a jerk, Dean!" Sam's voice called. "Why can't you go to your room for this? Why do you have to use my bed?" Castiel could hear the pleading tone in the younger Alpha's voice.

"We haven't done anything in your bed." Dean shot back. "Just against your door. Now every time you look at it you'll picture me and Cas getting down and sweaty against it!" He laughed at the string of angry words from his little brother as he entered the room, closing the door behind him.

"Dean," Castiel moaned, breathing hard as he tried to get himself off, his fingers buried inside of himself.

The Alpha looked up from the tray of things he had brought up to look at Tue Omega on the bed.

"Oh Cas," Dean mumbled, placing the tray on Sam's desk. "Your heat."

"Please, Alpha. I need you." Castiel lifted his hips higher , hoping that it would entice Dean to get closer to him. He was an Omega in heat after all.

"You need to eat, Cas." Dean said, but his eyes traveled down the length of exposed skin that was his mate. The way his face was pressed against the pillow, ass in the air, fingers pumping into himself hard and unforgiving.

Was there anything more beautiful?

"No, I don't want food. I need you inside of me," Castiel whined, more slick running down his leg, scenting the air with more mating pheromones.

Dean felt his mouth watering.

The air was thick with Castiel's need and want. It was quickly getting difficult to think through the haze. The need to dominate, mount, and fuck running through him.

Pulling his fingers out, Castiel used both hands to grip the sheets as a strangled cry escaped his lips.

The weight of his full heat hitting him.

It was worse than Hell.

He'd prefer Hell to this.

He felt downright animalistic. His train of thought stuck on a slow mantra of mate, fuck, need, Alpha.

It didn't take long for Dean to realize what was happening.

Grabbing the circle of pills off of the tray, he popped the birth control out of it's plastic before placing it into his own mouth before bounding toward the bed where Castiel was still crying out, his hips moving on their own accord as he searched for his mate.

Dean shred his clothing quickly, needing to get to his mate.

Meeting Castiel in a sloppy, needy kiss Dean pushed the pill into the Omega's mouth.

"Swallow it, Omega." It was a growl, a demand, that the pup was more than eager to obey.

"What a good Omega, Cas. Doing just as your Alpha told you." Dean praised, running a hand along the pup's sweaty back, making Castiel writhe under his touch. "Such a good boy."

"Alpha," the Omega whined, his voice weak, his hips bucking and fingers digging into the sheets. "Need."

"I know what you need, Omega. If your good, I'll give it to you." Dean growled, positioning himself behind the pup, taking in the sight of his mate all strung out and needy.

Reaching back, Castiel tried to touch Dean, his fingers shaking.

"What do you want, Cas?" The Alpha asked, rubbing up against his mate and enjoying the throaty moan he drug out of the Omega.

Dean could tell it was a struggle for Castiel to sit up. His body was shaking, breathing erratic, eyes wild and unfocused as he got to his knees and leaned against him. Lifting a hand, Castiel wiped it across his Alpha's mouth in hopes that he would take the hint and give him what he desperately needed.

Licking his lips, as the slick that the pup had left there, the scent hit Dean hard.

"Fuck." Dean growled, gripping Castiel's hips hard.

"Yes. Please, Alpha." Castiel pleaded, letting himself fall forward onto the bed, lifting his ass in the air in an obvious invitation. "Fuck me, Dean."

With another growl, Dean shoved himself inside of his mate, wringing a scream from the Omega at the sudden feeling of his Alpha filling him.

"What's the matter, Omega?" Dean asked, baring his teeth as he slammed back inside, wringing another scream from the pup. "I thought you wanted this." Another hard thrust.

"I do!" Castiel shouted, turning his head to look at his mate. "Don't you fucking stop!"

Moving his hands to Castiel's sweat soaked back, he shoved the smaller man's shoulders down to adjust his position.

Dean kept his pace slow as he continued to slam Castiel into the mattress, enjoying the sight of his Omega screaming for him more than he would ever admit to his mate. He knew how Castiel felt about these things while he was still in his right mind. But it called to Dean's Alpha. A siren song.

With a low growl, he continued his onslaught while whispering filth in his ear.

"That's right, baby, scream my name."

"Alpha!" His voice was muffled by the pillow that his face was hurried into. Lifting his head as far as he could with Dean holding him down he screamed his Alpha's name. "Dean!"

"You like that Omega?" Dean asked, loving the way Castiel was saying his name. The way he sounded wrecked. Moving his hands to grip his mate's hips so that he could hear that beautiful voice singing praises, he continued to pound into him.

"Yes Alpha!" Castiel's hips were moving, looking for more friction.

"How much?"

Castiel let out another scream, his orgasm building and his body shaking from it. "I love it, Dean!" He rasped, his voice failing him. "I love it so much!"

Dean let his fingers curl, his nails raking across Castiel's perfect skin, leaving red marks in their wake, marking him further as his own.

Seeing the new blemishes on his mate's skin, marks that he had made, woke something inside of him. A part of his Alpha that Dean didn't realize was there until that moment.

He could feel his knot building.

He was getting off on seeing his claim staked on his mate.

He picked up speed. "I'm going to knot you, Omega. Fill you up completely. Tie us together." Dean whispered.

"Do it." Castiel snapped, baring his teeth, his cheek still buried in the pillow.

"Do what, Castiel?" Digging more marks into the pup under him.

"Knot me, Dean! Fucking knot me!" Castiel growled back, his fingers knotted in the sheets.

Dean's knot grew, breaching his mate and tieing them together.

With one last final scream, Castiel let himself go limp, not caring. That he was laying in his own mess as he fell back to sleep.

...

The week went by in a blur of sex and exhaustion. Dean never would have thought that there would be a time when he would ever be tired of having sex but that had been before he had a mate in heat.

The easiest part of the week was giving Castiel his birth control. It was simple- give the pill to him while they were kissing and the command him to swallow it. Easy. Getting him to eat anything else, however, was a completely different matter. Dean had been at a complete loss at what to do. He had to get Castiel to eat something but how?

Surprisingly it was Sam who had given him the answer.

"You could always have him eat it off of you."

It had been sarcastic and obviously meant to tease the Alpha's brother but it had made sense to Dean. Why not give it a try? What could it hurt? He would have Castiel eat applesauce, yogurt, pie filling, oatmeal... Anything to get his mate to eat.

While Castiel was passed out from his heat, sleeping heavily in Sam's bed, Dean would attempt to clean the Omega with wash cloths. He had tried to get him into the shower but they had barely made it into the hallway before Castiel's heat had him grinding against the pup on the floor so he stuck to wiping him down when he could, praying that he wouldn't wake up. If he was awake he was demanding sex, using anything he could think of to get what he wanted.

By the end of the week they were both a little worse for wear but Dean was glad he could do it for his mate.

...

Castiel woke up to his body aching in every way imaginable. Groaning, he rolled over into his side, hissing at the pain he felt along his back and thighs. What the hell had happened?

Sitting up, he took in the sight of Sam's room with a pang of guilt. It was a complete disaster. Anything that had been sitting on the dresser was laying on the floor along with ripped and discarded clothing. There were also a few mystery spots in the carpet that he did not want to think about.

Castiel stretched his arms above his head, trying to work out the kinks there, before getting out of bed to search the floor for something to slip on when Dean rolled over.

"Gimme a second." The Alpha mumbled, reaching for the his mate.

Rolling his eyes, Castiel pulled on a pair of grey sweat pants he found on the floor. "If it is okay with you, Alpha, I need to pee." He made a sweeping motion towards the door with a smile.

Dean blinked up at him, clearly still half asleep. "Kay."

Shaking his head, the pup left the bedroom. In the hallway he could hear the rest of his pack downstairs and realized just how much he missed his new family. He decided after a shower he would venture down to see them.

That was until he caught sight of his reflection in the mirror.

He could not believe what he saw.

Blue and purple bruises covered his neck and shoulders in a way that almost looked as if Dean had been trying to paint him in the colors. He looked as if he should be in the hospital.

If that was what he could see, what did the rest of him look like? Glancing down he felt his eyes begin to burn.

His chest was covered in bruises of every color and size, decorating his skin. Welts, claw marks, and cuts that had bled at some point in time criss crossed his chest like obscene art.

He was terrified to find out what his back looked like.

Before he could stop himself, Castiel found himself sitting on the bathroom floor, tears escaping down his face, as his mind went over the past week.

Every time he had begged for his Alpha's knot.

Begging for Dean to mount him.

Screaming his mate's name.

Loving every mark Dean left on his skin.

He really was an Omega bitch after all. Nothing more than a wet hole to fuck. And what made it worse was knowing that he loved every moment of it.