The non-alcoholic beverage aisle of Tesco was deserted at 10 am but John still hurried to get everything Sherlock had sent him for. He already had six bottles of water and was now packing some bottles of Sprite into the caddy. ("At some point we will need the sugar, John.")

That morning, Sherlock had woken up feeling tense and hot. He claimed to be very close to his heat and demanded that John would fetch a weeks' worth of food and beverage. John had read that it was unlikely that they would leave the flat during Sherlock's heat. They would be too occupied, so to say.

John filled the caddy in record time. The thought that Sherlock was alone at home, weakened and tense, made John agitated. He imagined a dozen scenarios in which Sherlock accidentally fell, had a sudden stroke because of his bodies state or even got attacked by another Alpha. John knew that all his visions were highly unlikely and comforted himself with the knowledge that it was only his Alpha-brain telling him to stay close to Sherlock and protect him.

He ran the last few meters to Bakerstreet.


John stepped in the parlor, his arms full of groceries, when he was forcefully pushed back against the wall. Sherlock pressed his whole body against him, whispering desperately.

"John. John, I think it starts." Sherlock's deep voice was making John shiver and hot breath tickled the skin of his neck. John was strangely grateful for the shopping bags between them. The Omega was fully naked again.

"Sherlock! Please, let me put the groceries away." John wriggled free from the assault and fled into the kitchen with Sherlock on his heels.

"John, I can't….It's so hot! My skin feels too tight and…and... The other symptoms are showing, too."

John's mind supplied him with images of the other symptoms. Which, in fact, was only one. Self-lubrication. Sherlock's body was preparing his entrance to get penetrated. That was the logical part of his brain, giving him facts but the lizard part only showed him Sherlock writhing beneath him, crying out his name and begging him to be knotted.

John was painfully hard.

"God. Go and take a cold shower!" John ordered in a hoarse voice.

"But…"

"Go!" John's face contorted in frustration.

"Yes, John." Sherlock said quietly.

As soon as Sherlock had closed the bathroom door, John sat down heavily in a kitchen chair. The whole situation seemed so ridiculous and absurd. He didn't know if it was just the Alpha in him but he had definitely felt drawn to Sherlock from the moment they met. He wasn't shallow enough to not realize that Sherlock played a huge role in his wanking fantasies those past weeks. But it wasn't only sexual interest that pulled John closer and closer to his flatmate. If it had been, John would have gone out and found someone to get a bit of relief and distraction but since he had moved in, John hadn't even attempted to date someone. He just didn't need anyone else's presence. He needed Sherlock. Always.

After he had put the groceries away, John went to the bathroom and knocked. Sherlock had been in there for half an hour. Long enough to worry.

"Sherlock?"

"John." His name was spoken with relief.

"Are you alright? Do you need help?" The worry grew in John.

"Yes!" Although, it wasn't clear which question Sherlock had answered, John urgently entered the bathroom…

…just to stop dead, immediately.

Sherlock was standing under the spray, one hand around his considerable erection, the other moving behind his back. John couldn't see what Sherlock did but he was able to very well imagine it.

"John, I can't stop. If I stop it feels like… I tried but it… it hurts. I need you. Please, help me!" The Omega looked pleading into his eyes. John grabbed his wrist and pulled the hand away from Sherlock's cock.

"Come out of there." John tried to sound calm while he turned the shower off. Sherlock's movements were lacking his usual gracefulness when he made to step out of the tub. John awaited him with a towel. Slowly, carefully he dried him off, rubbing the cloth soothingly over Sherlock's back and up to his shoulders. He avoided Sherlock's groin in order to not tease the suffering Omega. His own renewed erection wasn't important when Sherlock was clearly struggling for composure. John had to stretch up to dry his hair with the towel but it seemed important that he did that for Sherlock.

He took the dressing gown from the hook at the inside of the door. Luckily, it was the blue, satin one, it wouldn't feel too irritating on Sherlock's skin.

"Are you hungry again?"

"No." Sherlock whispered exhaustedly.

Taking his hand, John led him out into the living room and to the couch, pushing him down into a lying position.

"You look tired. You should take a nap." John stated but Sherlock continued to rub his hand against his groin through the fabric of the robe.

John took him by the wrist again and pushed his arm over his head. Instantly, a deep blush blossomed on Sherlock's face and his pupils dilated.

"And stop this!" John said determinedly. Sherlock's breathing visibly speed up but he nodded in affirmation.

"Good." John said but didn't ease his grip on Sherlock's arm. Instead he leaned down and pressed an insistent kiss on Sherlock's rosy lips. "Good." He repeated, finally letting go. Straightening up, he noticed that Sherlock's eyes were closed. When they opened again, they were looking right into his and an expression of pure wonder was written all over Sherlock's features.

"Sleep now!" John ordered and went into the kitchen to make some tea.

Even in his sleep, Sherlock's hand repeatedly wandered to his groin. John sat on a chair that he had place right beside the couch, where he patiently stopped the Omega from masturbating unconsciously. One hand, though, was constantly cradling Sherlock's head, playing with the soft curls and massaging the scalp. Every time John interfered with Sherlock's subconscious attempt on self-pleasure, the Consulting Detective groaned in frustration but he didn't wake up.

John had never felt more content.


John had hoped that a nap would help Sherlock to calm down but he was actually surprised when Sherlock slept for whole 5 hours only to eventually wake up with a murmured "Fuck.".

Carefully, Sherlock sat up and rubbed his eyes. His hair was a mess, standing in every direction because of John's treatment.

"Sod it, John. This heat gets increasingly annoying!"

"I want to bond." John said out of nowhere.

Sherlock blinked a few times.

"Well I suppose we could find an Omega who…"

"No. I want to bond with you!" John interrupted firmly.

Sherlock was shaking his head violently. "No, you don't. That's just the Alpha talking."

He got up testily, starting to pace the length of their living room.

"How long do you feel like that? Two weeks? Three? Don't fall for your lizard brain John!" Sherlock said angrily.

"7 weeks and 3 days." John answered immediately.

Sherlock hesitated before he found a reply. "Pheromones, nothing else."

"Don't care."

Sherlock looked at him with insecurity and arched an eyebrow. "You don't care?"

"No." John shuffled in his chair. "Even if it's just the pheromones….I am happy. YOU make me happy. You can be an annoying prick, don't get me wrong, but you are also my best friend. The way we live is exciting but also comforting. I don't want it to end. Ever."

"I am not going to throw you out anytime soon. There is no need to bond."

"There is. At the moment you are mine, you said it yourself." John tried.

Sherlock narrowed his eyes and interrupted him, adding: "And you are mine.".

John smiled fondly at the possessiveness.

"Yes, I am. And I want it to stay that way. I am your Alpha. You are my Omega." John stated confidently, his posture proud to hide his intimidation.

"Just think about it, Sherlock. As long as you are still able to think, that is."

He supplied lamely before he jumped up from the chair and retreated hastily up into his room.

"I am always able to think!" Sherlock yelled after him.


Even though he was hungry, John didn't go down for the rest of the day. He didn't dare to.

What if Sherlock refused? Spending the heat with John was practical and the logical way. Spending their life together, on the other hand….


The calling of his name was constant and demanding. John braced himself for an awkward conversation when he descended the stairs to face Sherlock's decline.

Upon opening the door to their parlor every thought was forgotten as a strong wave of arousal surged through his body. There was a heavenly smell in the air that reminded him of summer nights and Sherlock. He felt his cock harden and press insistently against his pajama pants. John took another whiff of that seductive scent and groaned with lust.

Sherlock was still calling him, his voice already hoarse by all the screaming. Hastily, John crossed to the bedroom, chucking his few clothes on the way.

"Fucking hell!" He muttered when he saw Sherlock lying on his back in the middle of the bed, legs spread apart, desperately stroking his cock and pushing two fingers inside his leaking entrance.

"Turnabout is fair play, John." He moaned when he saw the Alpha's dazzled expression.

"Fucking hell." John said again. He subconsciously began to drag one finger over his prick while he just stood in the doorway watching Sherlock whose skin was moist with sweat.

"John, don't just stand there!" Sherlock actually whined.

"What do you need? Say it, Sherlock." John demanded, his voice thick with lust.

"You, John!" Sherlock hurried to say.

"Mine." The word emerged in a deep groan from John's throat as he walked over to the bed. He knelt between Sherlock's legs, letting his hands slide up and down the inside of his thighs.

He couldn't think. The only thing on his mind was to follow his baser instinct to claim/mate/fuse.

John let his right hand wander over Sherlock's bare torso, marveling at the paleness of his skin. Purposefully, he slid one finger down to the crease of Sherlock's arse, pushing Sherlock's own hand aside. Wetness and an impossible heat were engulfing him all of a sudden. John pulled the finger back and could smell the scent that had hit him upon entering the parlor. Curiously, he licked his finger.

The liquid wasn't tasty but appealing to John on an instinctual level. He just managed to think: "Pheromones!" before he pulled Sherlock's hips in his lap.

"Yes, John. Finally." Sherlock breathed, wrapping his long legs around John. Their cocks were touching, just a small press on skin of skin but it made John whimper in desperation. With his hands under Sherlock's arse, he lifted the Consulting Detective who wriggled over him until John's cock was lined up with his slick entrance. Letting him sink down on his cock, John bit his lower lip in an attempt to stay quiet. Sherlock didn't have his decency.

"Oh god!" He moaned loudly when John entered him.

Hearing Sherlock destroyed John's last bit of will power. Hard and fast, he pushed all the way in. He slung his arms around Sherlock's torso and pressed them close together, resting his forehead against the Consulting Detectives chest.

The Omega took heaving breaths while his internal muscles engulfed John.

Impatiently, Sherlock pushed himself up until John's cock almost slid out of him before he sank down again. A sigh of relief escaped from his lips while John just held on to him.

Soon, he settled into a comfortable rhythm, making small movements to soothe the itch inside of him.

"Finally." He quietly whispered, again and again.

John was at a total loss of words, gripping the Omega's hips under his hands.

He begun to thrust in shallow movements up into Sherlock, relishing the tight heat he had never experienced before. He let his head fall back and savored the feeling of Sherlock around him, with closed eyes.

Seeking relief, Sherlock gradually picked up a faster pace. He moaned when he felt John's knot press against his entrance. It felt too big but Sherlock wanted it inside of him, none the less. He twined his arms around John's neck.

"Do it, John. God. Please, I need it." He whispered hoarsely into the Alphas ear. John gripped his hips even tighter, forcing Sherlock down on his knot. It didn't pass the tight entrance at first. Sherlock screamed in frustration, scratching his nails over john's back.

"Make me yours, John. Please!" He begged in despair.

John thrust hard and deep into him, pushing his knot against the rigid ring of muscles. He growled in frustration when he failed once again. His fingers already left bruises on Sherlock's pale skin but John kept fucking into him, following his body's demands.

Suddenly, Sherlock met his upwards thrust with his full weight, forcing the knot into the slick opening. The Omega groaned in relief, his climax hitting him powerfully. He came hard between their bellies and over John's chest.

Sherlock's orgasm had made his inner muscles clench around John's knot, pressing it hard. John's vision got fuzzy around the edges as the cramped ardour squeezed him to climax.

"Sherlock!" He screamed when he spent himself inside the Omega. He was still kneeling with Sherlock toppled over him, resting his head on John's shoulder, while the aftershocks rippled through his body.

The Omega was completely blissed out, he didn't move a muscle when John tried to lift him from his lap only to be reminded of his new biology. The movement had renewed the pressure on his knot and he held Sherlock close to his chest as his second climax hit.

"Jesus…" He murmured in amazement. Carefully, he let his body fall on its side to bring them in a more comfortable position for the time of their knotting.

Entwined around each other, they lay across the bed, recovering before the next wave would hit.


John awoke with the feeling of nimble fingers caressing his scalp. Tiredly, he blinked his eyes open. Sherlock was lying right beside him on his back, petting John's head with his left hand. A fond smile grazed Sherlock's face as he watched his Alpha waking up. John's heart clenched in his chest. At any other time, John would have tried to talk to Sherlock but as soon as he was fully alert to his surroundings, his body instantly reacted to the strong scent of arousal in the room. He let his gaze drift over Sherlock's naked form, noticing that the Omega was fisting his refreshed erection with the other hand.

John languidly crawled over Sherlock, bending down to press a soft kiss on the plush lips before he crouched down between the Consulting Detective's legs. His inexperience didn't stop him from giving Sherlock's cock an experimental lick.

"John." Came a sigh from above him.

Steadying the shaft with one hand, John licked over the tip where pre-come had already gathered. Sherlock's hand found his head again, pushing lightly to encourage him. John hollowed his cheeks and sucked the head into his mouth, eliciting a groan from the Omega. Looking up, he saw that Sherlock was watching him with dark eyes and slightly parted lips. His own erection was throbbing heavily by now. Trying to find some friction, he pressed his groin hard into the mattress below him while he took all of Sherlock as deep in as he could manage. Careful to not choke, he established an easy rhythm, sucking when he pulled off and breathing deep before he took it in again. Sherlock was squirming beneath him and moving his hips in tiny, shy thrusts. John watched him throw his head back in frustration and lifted a brow at him.

"It's not enough. I need…" But before he could finish, John was forcefully pushing two fingers into him.

"God, yes!" Sherlock groaned. His entrance still loosened from the last time, John decided to add another finger. Instantly, Sherlock began to push down on his hand. It made John's attempt on giving head almost impossible but the Alpha did his best to keep some kind of rhythm.

"Deeper, John!" Sherlock demanded but John was already as deep as possible. Carefully, he pulled out and off of him and sat back. The Omega regarded him with a devastated look. John pushed his legs upwards, nearly folding Sherlock in half. He crept up until his cock was pressed against Sherlock's entrance. He let his weight rest on Sherlock's thighs, stretching him uncomfortably, but neither of them did mind it.

John shoved all the way in, watching Sherlock's face to see it contort with pleasure. Smiling, he pulled a bit back before he pushed in harder.

He thrust in short vigorous movements into Sherlock's pliant body. Sweat was forming on his neck and running down his drudging body. But still he could see signs of discontent play on Sherlock's features. There was no possible way he could go deeper in this position.

"Turn around!" He ordered.

He released Sherlock's legs and watched him scramble backwards up the bed. The Omega shot John an indefinable glance before he turned on his belly.

All air left John's lungs in a huff. There, on Sherlock's neck, literally black on white, where three letters forming the wonderfully simple word Yes.

John sucked in a deep breath, grinning impossibly wide. Trying to appear unaffected he said determinedly "On your knees!" and bend down to kiss Sherlock's back. The Omega pushed himself up, kneeling in front of John who took hold of his hips and licked a long stripe down his spine.

"Beautiful." He whispered onto the pale skin. John positioned his cock at the crease of Sherlock's arse, rubbing it against the slickness between the luxury globes. The Omega pushed back against him with a frustrated groan.

"John, please!" He whimpered in agony.

He lined his cock up with Sherlock's dripping entrance and could feel Sherlock's hole accepting him greedily.

Enjoying the confining heat of his Omega, John slid in with remarkable control. Eyes closed, he pulled Sherlock slowly onto his cock until he was fully engorged. The new position allowed him to go deeper than ever before. John's knot was already brushing against the rigid ring of muscles that surrounded his cock.

Reluctantly, he pulled out of Sherlock until only the head was still inside. He held it there for long seconds before he plunged back in. A deep, satisfied growl emerged from John's throat when he felt Sherlock push back in time with his thrust. Remembering the only bit of his medical knowledge that seemed to be important right now, John pressed one hand between Sherlock's shoulder blades, forcing his head onto the pillow. Emphatically, John pulled out and thrust right in again. Sherlock had turned his face to the side to get enough air. It gave John the opportunity to hear him moan hotly at the first brush against his prostate. The Alpha changed the angle a few millimeters before he pounded into him again but to Sherlock it made all the difference. Screaming incoherently, he fisted his hands into the sheet and tensed to keep his position exactly like that.

John held Sherlock's hips in a strong grip, forcing him on his cock again and again. The Omega was already bracing himself against the headboard while John kept on thrusting into him.

"Fuck, John…" He muttered, feeling his climax build continuously. Sherlock tried to bring one hand to his throbbing prick, the urge to come rising viciously inside of him.

"No, love." John said, snaking one hand around Sherlock's shoulder and pulling him upright.

"Sit back."

Suddenly the press of his knot against the Omega's entrance got more insistent. Sherlock was moving in waves upon him and John watched the muscles in his back flex and tighten. He let his tongue wander over the crook where neck and shoulder met. Gently nibbling he thrust upwards, getting bolder step by step.

"Say it, Sherlock." He whispered between kisses to the blatant letters on the Omegas neck.

"Yes. Yes, I am yours." John pressed Sherlock's body firmly into his lap, thrusting in a punishing pace into him. He felt the Omegas entrance ease under the assault, giving way for his swollen knot.

"Mine!" John growled when it finally slipped in and bit hard into the curve of Sherlock's neck. The skin was breaking under his teeth and the taste of blood was filling his mouth. The world turned white around the Alpha and an immense wave of emotion washed over him. For a few seconds he was sure he felt a second heartbeat inside his body but then it was gone and he was back on the bed in Sherlock's room, buried deep inside the Omega. His Omega.

John's knot was pressing against the walls of Sherlock's entrance, bearing down on his prostate insistently. When he felt the Alpha's teeth breach his skin, Sherlock had barely touched his cock but his climax hit him severely. He threw his head to the side, giving John space to claim him.

"0.2 per cent." He groaned before he collapsed onto the bed and took John with him. Lying on top of Sherlock, John considerately licked the droplets of blood that were leaking from the bite while one word was flashing in his head in bright letters.

Destiny.