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The Alpha's Rut

Summary:

This takes place in s12 right after Mary cameback from the dead and Sam was saved from BMOL ( British Men Of Letters ).

Alphas have ruts just like omegas have heats. But if the Alpha stays unmated after the age of 35 their ruts become irregular. The body begins to demand the alpha to find a mate. As for omegas, they become more submmesive after 30.
Also what is Dean gonna do when the whole finding a mate thing gets in the way for the feelings he has for his brother.

Notes:

I am not really an expert in the whole Alpha / Omega thing , but I was dying to write one involving Sam and Dean especially focusing about the idea if alphas having ruts instead of just focusing on omega's heats.

I had this idea swirling in my head for a week now so I decided to go for it.

PS: This is me first time writing smut between Sam and Dean so I hope you enjoy it

Work Text:

After Mary came back from the dead, she started living with her boys in the bunker. She wanted to start knowing them again and learn how the past twenty years have treated them. On the other hand, Sam and Dean were still working on cases sometimes with their mom and others not. They were afraid it could overwhelm her or it was too soon for her to be fully back in the game. They were still trying to figure out how to deal with the Brits, especially since they became aware of their plan.

Sam and Dean are both unmated, and since Sam started hunting with his brother almost ten years ago, he completely ditched the idea out of his brain.
It was inconvenient to try and find himself an alpha to settle down. The hunting life had too many risks, and he was aware of them. Dean was pretty much the same, for him hunting is important and he can't see himself quitting the one thing that makes him feel in control of his own urges and anger.

Mary is a beta and the only two things different about betas are that they don't get cycles and can't smell pheromones. Other than that, they are normal human beings without the primary urge to mate or settle down.
And because of that, Mary took notice of a few things about her sons. They are pretty much reliant on each other especially when it comes to their alpha / omega dynamics. They understand each other's scents and urges. They don't have to say much for the other to understand what's needed. For a beta like Mary, she couldn't lie and say that she gets it. She never smelled pheromones nor had these primary urges.

She doesn't think that their relationship is incestuous or anything, but it's definitely weird for brothers to be this close. At the end of the day, they both are unmated alpha and omega living under the same roof. To what extent are they able to control who they actually are?

One day, they were all sitting together eating dinner in mutual silence; they didn't have to talk to feel comfortable in the other person's presence. Suddenly, Mary saw that Sam's face became uneasy and he looked at Dean in confusion.

"Dean?" Sam said.

"Yeah?" Dean replied without looking at Sam, still indulged in food.

" Didn't your last rut happen like two months ago??"

" Yeah, I guess. Why are you asking?" Dean now looked at Sam pursuing his lips with curiosity.

" It's weird because I can smell it on you and it's coming very soon," Sam said, raising his eyebrows at Dean.

Dean nearly spat the food he was chewing." What?! " He exclaimed in disbelief.

" You know I was never wrong when I sensed it was coming everytime."

Dean was deep in thought. He knew exactly what that meant for him. Did Sam also know about the alpha thing?
He shook himself out of thoughts." Well, that means I got like what? A day or two to leave. Alright. thanks for the heads up"

" Dean, this isn't normal why is your cycle in disorder??" Sam was genuinely confused and worried about Dean.

Great. Dean thought.So apparently Sam has no idea about anything." It's an alpha thing; don't worry about it" Dean continued eating like before.

Sam gave him one of his bitch faces. Dean knew that Sam always hated when he made these comments about how omegas can't comprehend certain things about alphas. It made Sam feel offended like he was stupid or something.

Mary witnessed the whole conversation and was uncomfortable at first, but then there was tension between her boys and she thought maybe she should say something.

" Not to interrupt, but Sam's right, Dean. Is everything alright?"

" Mom, it's nothing really. I can handle it." Dean was fed up and wanted this conversation ended immediately.

" Fine. Do whatever," Sam said in anger.

Great, again. Now Sam was furious with Dean. But the thing is, Dean has so much on his mind right now that he doesn't have the energy to try and soften the situation. Sometimes Sammy brought out that alpha part of Dean; he hated seeing his brother upset or in distress.

Sam quickly finished his plate and got up and left the room. Dean sighed in exhaustion. Yeah, it is really coming up if he feels this tired.

" Dean, I know that I might not understand a lot about you two, but you can try and talk to me," she looked at him reassuringly.

Dean looked at his mom skeptically." I can't talk to him about this because it's uncomfortable for me. For both of us actually."

"Ok. I am a beta so you can tell me." She smiled at him.

" If my rut starts to get irregular, that means I have to find a mate. Immediately" he emphasised at the end.

Mary was surprised. She really didn't know a lot about secondary genders. " Alright. can you elaborate?"

Dean hesitated a little." When alphas get to 35 and still have not mated, their ruts do that because the body demands mating with an omega. It makes the alpha more out of control so he can mate whatever omega he takes notice of. It's impractical really"

Dean looked burdened, and Mary understood what he was getting at honestly. Not being in control of your body must suck.

" Maybe it's your sign to settle down then," Mary joked.

" I can't" Dean said. " The one I am willing to mate with, I can't have"

" At least you have one in mind." Mary exclaimed. " Who are they?"

Dean looked at his mom and didn't say anything further. He stood up picking up the empty plates and went to wash them.

Mary's face fell down. Of course, it's Sam. Since Mary came back, she has never seen anyone near Dean except Sam and their angel friend Castiel. The way Dean treats Sam, his looks, his touches, and his protectiveness. It wasn't brotherly love; it was more romantic.

________

Dean has just finished packing up his duffle. He was going to be away for three to four days in some motel room trying to get this rut over with. He thought about Sam for a second. He can't leave the bunker while his little brother is still mad at him. It doesn't feel right.

He went to look for Sam in the library, the kitchen, and the war room but didn't find him. They were in the middle of the day; why would his brother still be in his room? He eventually found him in his room reading some book.

Dean approached the room and the minute Sam saw him, his bitch face was back on. Dean sighed and knocked on the open door.

"Can I come in?" Dean tried to be nice a little to get Sam to talk to him. They haven't talked since yesterday.

" The door is already open" First the cold shoulder now this. Dean was starting to pray this wasn't going to last or he was going to lose it.

" Still, I figured you wouldn't want to talk to me yet," Dean approached Sam's bed cautiously. Sam only gave him a glance in return.

" must be an intresting book." Dean now sat at the end of the bed.

Dean figured that Sam wasn't going to reply anymore so he started saying what he came for in the first place. " My duffle is ready and I am leaving in 20 minutes. figured I'd come here and make sure you are okay before I leave."

Dean was having Sam's full attention now, but he still didn't comment. So Dean continued, "I'm sorry about yesterday. I didn't mean you are stupid or dumb when I said it was an alpha thing. I was just still processing what I was going to do and the decisions I have to take in the future."

" I know. " Sam closed his book and put it on the nightstand.

" You know??" Dean was confused.

" When you shut me down yesterday, I did some research and figured out what was up with you."

" Great. So I don't have to say it all again." Dean was relieved

" Again??"

" I talked to mom. Thought it was easier than talking to you."

" Last time I checked , I don't bite, Dean." Sam was getting grumpy again. He was honestly so adorable, Dean wanted to kiss him right at the spot.

Before Dean could defend himself, Sam talked again." Anyway, right now, you go and have fun with whatever omega you find. Maybe you will like them eventually and mate them," Sam said slightly irritated.

Was Sam feeling jealous?? Dean thought to himself. No it can't be. There is no way his Sammy is feeling the same. " Are you jealous, little brother?" Dean said in amusement.

Sam couldn't help but blush; he hated how Dean always succeeded at teasing him. " screw you, jerk."

" Is this a promise, bitch?" Dean retorted playfully.

" Is your rut getting to your head already?"

" Might be," Dean chuckled. He always loved teasing Sam.

After a few minutes, Dean got up and was leaving when Sam blurted, " Are you really going to look for a mate?"

Dean was taken aback and turned around to meet Sam's eyes. He saw what looked like sadness and disappointment.

Sam continued. " I mean, do you have to.... I'm asking because it doesn't seem fair to be obliged to do something you don't want to"

Dean tried to study Sam's face further, and without noticing, he reached out for Sam and embraced him. " No, Sammy. I don't have to. I'm just worried, I might hurt you if I couldn't control myself"

" Dean, you could never hurt me." Sam looked at him in desire. Dean felt the atmosphere change around them including the scent Sam was giving off.

" Sammy.... please don't tell me I'm getting mixed signals here, I feel my rut starting to take control right now."

" I am willing to take whatever you want to give me , Dean" Sam continued " But if you don't want to, forget I said anything , I don't want to ruin our....mmmhmm"

Without hesitation, Dean kissed Sam softly at first and Sam reciprocated in return. Then Dean leaned back, looking in Sammy's eyes." You sure this is what you want? Cause if I went further I wouldn't be able to stop," Dean said with desperation in his eyes.

The next three words that Sam said made all the control in Dean's body disappear. " I love you," Sam said squirming; he also didn't believe that this was happening.

Dean started kissing Sam aggressively and Sam was moaning from their kiss nonstop. It has been a long time since Dean spent his rut with anyone, including an omega. It happened once in the past few years after he represented and that one time he was feral to the point that he left many bruises on the random omega's body. Since then, he has made a commitment to not spend his rut with anyone ever again. Even if it made his pain worse.

Dean truly was scared that this time with Sam was going to be the same as many years ago, and if he ever hurt Sammy that way ,he wasn't going to forgive himself. But then he looks into his baby brother's eyes and all he can see is want. It's like Sam is the one having a rut and not him.
Dean pushed Sam onto his bed and was still kissing his lips with passion; he was sure that their lips were bruising by now.

" Dean... I...I feel so hot. Pls Dee" Sam moaned loudly; Dean was sure their mom could probably hear them. But for some reason he didn't really care. Right now, he is dying to taste his brother everywhere his tongue goes to.

Dean attacked Sam's throat and started licking his scent gland. He was producing all these sweet scents like cinnamon, honey and a hint of Chrysanthemums . " God Sammy, you smell so good, I could lick your body all day long"

Sam couldn't hold his eyes open since Dean started his attack. When Sam opened his eyes for a brief second, he gasped when he saw the door to his room was still open. " Oh, god... Dean .... the door"

Dean didn't really stop until minutes later. He looked at the door and understood what Sammy wanted. He could hardly get up and leave Sam for a few seconds just for the damn door.

After he returned, he took notice of his confined hard as a rock length still in his briefs. He groaned loudly when he pinned Sam down again." Sammy, I can't hold back any longer. I'm dying to get inside your tight little ass"

" Do it, Dean, don't hold back. It's ok..... I need it too," he said, panting.

Dean nearly ripped out Sam's jeans and tossed them onto the floor. When he saw Sam's angry red cock , he started salivating . " I'm gonna make you feel so good, Sammy. Gonna swallow this pretty cock of yours and fuck your ass with my tongue."

Sam forgot any vocabulary he could use when Dean swallowed his dick in one swipe; Sam nearly yelped and was drowning in pleasure. Dean was really talented with his tongue. It wasn't just rumors.

After two minutes of sucking, Dean went down to Sam's leaking hole. When he tasted a brief of Sam's slick, he felt like he wanted to live between Sam's ass cheeks forever. " Sammy, you are so perfect everywhere. I don't think I could ever quit you"

" Dean please.... hurry... and fuck me NOW!!"

" But baby, I still didn't prepare y...."

" It's my ass, not yours, so fuck me right now or I'm going to kick you out of here" Sam was so serious; Dean was genuinely scared this could end before it even started.

" Ok .ok Sammy, I'll do it," he said kissing Sam's head to calm him down.

Dean directed his length to Sam's entrance and started pushing in. Dean thought to himself that this is what real heaven must feel like. " Sammy.... so good for me baby" Dean groaned. Without warning, Dean started moving. It's like this primary urge inside him clicked on and he couldn't think of anything other than knotting his little brother.

"Yes, just like that, Dee." Sam clutched at his brother's neck to try and hold himself back when Dean started pounding passionately into his ass.

Dean's thrusts didn't falter, like it's the only thing he knew how to do at the moment. " I'm gonna paint your insides with my cum Sammy. Knot your little hole. Knot you until you become full with my pups". Dean was losing himself to the pleasure and nothing at that moment could Sam say or do would stop his brother.

Sam was so overwhelmed by his brother pounding on his prostate. He couldn't stop himself when he started crying. He cried from intensity and want; he was dying for a release." Dean....I'm...I'm coming!!!" and just like that Sam came with a shout clinching around his big brother's knot." Come on Dean. Knot me, do it. Mark me up and make me yours" He started persuading Dean to mark him. To make him his mate.

" Bite me big brother!" Sam shouted when he felt his brother's knot catching into his rim.

" Sammy....Mine Sammy, you're mine" Dean groaned while knotting his baby brother. Next, Dean took his brother off guard and bit hard at his throat, mating him.

After the intensity of both their orgasms, Sam and Dean became tied to each other, breathing heavily. When Dean came down a little from his high, he started licking at the new bite mark. Sam hissed a little. He would be lying if he said it didn't hurt. But it was the best pain he ever felt. Knowing that he finally became Dean's, he was delighted.

They both slept for a few hours; Sam woke up to Dean still inside him and hugging him from behind. His brother's knot has deflated, so he tried to move as little as possible so he doesn't wake Dean up. When his brother's tip was still inside him. Dean brought Sammy all the way back into his dick." Trying to run away from me, Sammy?" Dean mumbled next to his ear.

Sam was taken off guard and gasped at the sensation."No...Dean....I was thirsty"

" Just stay here for a little bit, baby. Will bring us water in a bit" Dean was still sleepy and couldn't even leave his eyelids open.

" Dean, you are tired. Let me go instead." Sam attempted to get away again but this time, Dean forced him to stay by wrapping his arms around Sam's middle.

" Okay, Dean. I'm not going," Sam sighed in surrender.

_________

After two days of marathon sex and Dean clinging to Sam, Dean woke up more energetic than ever. He kissed Sam's jawline, attempting to wake Sam up." Come on baby, it's 10 a.m." Dean continued kissing his neck and shoulder.

"Dean, I can literally smell that your rut is over. Stop clinging to me," Sam protested. He didn't think that his brother would be this touchy and cuddly. It's so out of Dean's character. But maybe being his mate is different.

" Alright , Dean. Quit it. I'm dying to take a shower right now. I stink." He said getting out of bed.

" You have the best smell ever." Dean was looking at Sam with the eyes of love to the point he thought his brother was under a spell.

Before Sam could protest more, Dean finally left him alone, and Sam sighed in relief. He does love his brother, but really it was too much!!
Dean was heading for the shower when Sam said." Dean, after we both wash up, we need to talk"

Dean didn't like his brother's tone, but he understood that Sammy wanted to clear things up between them now that they are having a new bond other than being brothers.

After Sam took a shower at last, Dean was sitting on the bed waiting for his brother. Sam was going to burst out laughing at the look on Dean's face. he was like a child who broke a furniture and waited for his mom to punish him. He was truly stressed out and it even showed in his scent.

" Dean " Dean refused to look at Sam. Maybe he was scared of rejection, thought that his little brother regretted what happened between them, which was far from the truth.

" Dean look at me" Sam now grabbed his brother's chin and made Dean face him. " It's okay. Don't worry, I'm not gonna leave you"

"Really?" Dean looked at Sam skeptically, and he had every right honestly. They didn't talk about their feelings before spending Dean's cycle together.

" Yeah." Sam chuckled and kissed Dean's cheek. He tried to reassure him." I meant it, Dean. When I said I love you. I meant it in the not very brotherly way." Sam smiled.

Dean beamed at him, as if he were the richest man in the world. " I love you too, Sammy. I just now realized I didn't say it back". Now that Dean looked more at Sam's body, he stared at the bite mark that his brother wore over his scent gland. Also, he saw the other bite marks scattered all around Sam's body; there were bruises here and there.

Sam saw panic starting in Dean's eyes." Hey. Hey Dean, it's ok. You didn't hurt me. I wanted this. I asked you from the beginning" Sam continued, "I will admit it. You are kind of an octopus leaving marks everywhere but still. It reaffirms that I'm yours forever" He started stroking his brother's nape while producing calming scents.

" You were the first one in many years." Sam looked at Dean in confusion when he started saying." I only spent my rut with one omega many years ago and I never did it again. Not even sleeping with a beta to help the ache." He laughed bitterly.

Sam looked at Dean in disbelief. His brother, Dean Winchster, the womanizer, sleeping with any beta or omega available, has never slept with anyone in years during his cycle. How is that even possible. " Why?" Sam was genuinely curious.

" Was afraid I would always lose control and hurt whoever I was with ." Dean said honestly." I still do. I mean look at what I did to you" At this point, Dean was avoiding looking at these marks." I never meant to hurt you, Sammy. I would rather kill myself than do this to you, but I couldn't control my urges."

" I know, Dean. I understand and I don't hate you, ever." Suddenly Sam remembered his mother. What are they going to do about that.
What if their mom hated them and wanted to leave after she just came back into their lives again. Now Sam started to worry, fortunately Dean smelled it on his mate and embraced him. " What's on your mind, Sam?"

" Mom, What are we gonna tell her?" Sam felt like crying right now and turning into a ball and staying inside Dean's embrace forever.

" Don't worry about mom , Sam. I think she already knows about us"

Sam jerked his head up. and before saying anything, Dean elaborated." When I first talked to her, I gave her hints about who I wanted to mate, and I'm sure mom has it all figured out." Dean gave a soft smile.

Sam relaxed a little. They were going to be fine and even if things went side ways they had each other.

The sound of the door knock woke them both from the moment they were having." Yes?" Dean replied.

" If you boys are awake, I prepared some breakfast. Come out and eat before it gets cold.

Dean looked at Sam smirking." Told you."

 

THE END