A/N  So funny story...MandyFullertonLee and I may have gotten drunk together and this idea got stuck in my head. In this, John dated Mycroft before he met Sherlock. Just adds a level of discomfort between John and Mycroft that I kind of enjoy. I should just say that I DO NOT SHIP JOHN AND MYCROFT!!!! I am strictly Johnlock and Mystrade, I just got stuck on this and had to write it lol. Sorry this took so long to upload...inspiration has been not flowing as well as usual these days..... Enjoy <3

Sherlock was nervous. It was his first year at this college and he already hated it. The only reason he was here was because this school had the best Forensic Science department in the country. Mycroft had suggested that he try the program. He had resisted in the beginning, loathing the idea of following in his older brother's footsteps. Yet here he was, walking into Saint Bartholomew alongside Mycroft for his first day. They got their class list and went their separate ways. Sherlock made his way to the chemistry lab, taking a seat and pulling his notebook out to take notes.

"Mind if I sit here?" The new voice broke Sherlock's concentration and he glanced up to see a familiar face smiling down at him. John Watson, one of Mycroft's ex-boyfriends from last year. There was no recognition in the older boy's face and he realized that he had no idea who he was talking to. He nodded and shifted his chair to make a bit of room. John smiled and sat next to Sherlock, pulling out a pen and a handful of papers. "I'm John by the way." Sherlock found himself enthralled by his voice. He felt his cheeks darken slightly and he cleared his throat.

"Sherlock," He tried to sound uninterested, almost wincing at the slight tremble that betrayed his emotions.

John watched the young man that had caught his eye, there was something familiar about him, but he just couldn't place it. He didn't look old enough to be here, but judging by the efficiency with which the boy used the complex machine in front of him, he assumed he wasn't as young as he looked.

"So, how long have you been studying here?"

"About thirty minutes." John could help but chuckle at the response. Why did this boy seem so familiar?

"I'm sorry, but have we met before?" He saw the boy tense and instantly began filing through all the people he hooked up recently. This stunning man was not on that list. What a shame that was.

"No, we haven't met before. But I do believe you know my brother." Realization dawned on John as an image of his ex-boyfriend flashed through his head. Of course, it made so much sense! He could see the resemblance now.

"You're Mycroft's little brother aren't you?"

"Yep,"

"Oh dear Jesus, I'll bet you just hate me don't you?" Sherlock was shocked. Why would John think he hated him? Part of the reason Mycroft had broken up with John was because he learned that Sherlock had feelings for him. They had only met once, back before Sherlock's growth spurt last summer, so it wasn't surprising that he didn't recognize him. John looked better than ever.

"Why would I hate you?"

"Well my relationship with your brother really didn't end very well."

"So, why would that affect my opinion of you?" John chuckled, now he could definitely see the resemblance. Sherlock talked with a similar bored tone that the elder sibling did, though Mycroft wasn't nearly as attractive as his younger brother.

"Well, most of the time the ex-boyfriends are hated by the siblings when things go sour."

"I don't see why I would hate you. It's not like you broke Mycroft's heart or anything."

"Nice to know I made an impression." Sherlock chuckled at that, and John knew he wanted to hear that sound again.

"Actually, I do wish you had broken his heart. I would have sent you a fruit basket." John snorted in laughter.

"I remember Myc talking about how much you two hated each other, never really believed him though." Before Sherlock could respond, the professor arrived and the class started. John turned out to be incredibly brilliant and rather distracting. Mycroft had always made him out to be a bit of an idiot, never taking anything seriously and always joking around. While he wasn't wrong about John joking around a lot, he was vastly incorrect about his intelligence. John easily kept up with the lesson, and even kept Sherlock from being bored.

When class was over, Sherlock started packing his stuff up when he felt a soft hand on his elbow. He turned to see John looking up at him, something in his eyes that Sherlock registered as need.

"Hey Sherlock, I was wondering if you wanted to have dinner with me tonight?"

"You don't think that would be weird?"

"Why would it be weird?"

"Well, isn't there some sort of code that states that you can't date an ex's younger sibling? I don't know a lot about social norms but I am fairly sure I have heard that one somewhere before."

"You know, something tells me that social norms don't really apply to the Holmes brothers." The pair giggled for a moment, John becoming very aware of the fact that his hand was still on Sherlock's elbow. He broke contact and stepped back, grinning up at the younger man. "So, I'll pick you up at seven?" He didn't give him enough to respond before spinning away and leaving the room. Sherlock was frozen in shock at the bluntness of the young man. He had been asked out before, but never quite that abruptly. This could wind up being very interesting.

Later that night, as he was preparing for his date, Mycroft entered his room. There was a sly smirk on his face that sent a flush running up Sherlock's neck.

"So, hot date tonight brother dear?"

"Sod off Mycroft," he snapped, fighting to try and choose a shirt. He was torn between a pale blue one that complimented his eyes, and a deep purple one that made his skin look pale and flawless. "Why are you here anyways? You never take interest in my sexual life."

"Well, I do believe it is only right for me to give you some tips on dating John Watson, considering I did date him first." Sherlock felt the need to melt into the carpet with embarrassment.

"I am fairly certain I can figure out how to date John Watson without your help."

"John does this thing with his tongue-"

"Oh dear god please stop! The last thing that I want to hear about is what he can do with his tongue from my brother."

"I just wanted to ensure that you are prepared. He may seem harmless little brother, but there is something very, irresistible about him. He will be able to convince you to do things you may not have considered before-"

"Sex doesn't alarm me."

"How would you know?" Sherlock scowled at his older brother. He hated that his brother was right. Sherlock didn't like to be touched, so he had always ended any kind of relationship before it got to that point. He turned his attention back to the shirts before him. He heard the sound of knocking and glanced at the clock. It was seven. A flare of panic gripped him.

"Could you tell John I will be down in a moment?"

"Of course brother dear." He heard Mycroft start to leave the room. "And Sherlock," The younger turned to his brother, knowing that he must look terrified. "John Watson may be able to seduce anyone he chooses, but if you ask him to stop, he will back off without a single question. He is a good man." Sherlock felt a sense of relief pass over him. "Wear the purple shirt. It is rather becoming on you." Sherlock threw one of his pillows after Mycroft, blushing at the wink his sibling threw his way. He took a settling breath and grabbed the purple shirt.

John was nervous. The last time he had been to the Holmes Estate things hadn't gone over so well. He still felt a pang of guilt when he thought of his break-up with Mycroft. He couldn't even remember why they had split, or who started the fight. It's not like he missed the man, he was never the best boyfriend, but that didn't stop him from feeling bad. He reached the front door and knocked, steeling himself with a breath. He waited there for what felt like an hour, though he knew his nerves were just messing with him.

When the door finally opened, he was greeted by Mycroft, sending his head reeling.

"Hello John, pleasure to see you again. Please come in, Sherlock will be down shortly."

"Hey Myc, I didn't realize you would be home. Don't you normally have classes on Wednesdays?" He was beyond nervous now. Maybe this was a bad plan, taking Mycroft's younger brother out on a date. He hated to admit it, but the older Holmes sibling could be pretty intimidating when he was mad, or jealous.

"Not any longer, I finished those classes last semester." John nodded and shoved his hands into his trouser pockets. "What are your plans for my brother?" John almost choked on his breath.

"I don't really think that is any of your concern-"

"Sherlock is young and rather inexperienced; I would like to know what you plan to do to him over the course of the night."

"What I plan to do to him? Jesus Mycroft, see this is your problem. You have to be in control of everything, even your own brother apparently."

"How dare you-"

"No, no it's not fair. I did nothing to deserve those questions. You know I will treat Sherlock with nothing but the utmost respect." Mycroft looked rather flushed and John recognized the anger in his eyes.

"You cannot come into my home and expect me to stand idly by while you take my little brother out on a date. I know how your dates end Mr. Watson; you do recall I was the main focus of many of your nights." John was blushing now, his mind filling with memories from the few months he spent with the elder Holmes sibling.

"Myc," he softened his voice, not wanting to fight anymore, "you know me, I would never make Sherlock do anything he is uncomfortable with. I wouldn't do that to Sherlock." Mycroft nodded, seeming to accept his answer. John smiled softly; he knew that underneath that emotionless exterior, the older boy hid a heart that beat only for a few. John had never been one of those people, but he knew that Sherlock was.

"Am I interrupting something?" The deep baritone of the younger sibling shocked John and Mycroft out of their little moment. John spun to face his date, unable to stop the flirtatious grin that split his face when he saw the younger man. He was wearing black slacks and a deep purple dress shirt that seemed just slightly too small for him. He looked absolutely delicious.

"No, you interrupted nothing brother dear." John ignored Mycroft and stepped closer to Sherlock, scanning him with hungry eyes.

"You look wonderful tonight Sherlock." He enjoyed watching the pale skin of the boy turn a soft pink at his words. The pair said farewell to Mycroft and headed out.

John took Sherlock to a small Italian place called Angelo's, where they spent the night chatting and getting to know each other. After dinner, they went for a walk, winding up at a small playground. They sat on the too small swing set and continued talking late into the night.

"So, can you do that deducing thing that Myc does?"

"Not quite as well as he can I'm afraid, but yes."

"Show me."

"But if you already know about it then why do you want me to show you?"

"I could never get him to deduce me, no matter how many times I asked."

"There is a reason for that John."

"I don't care. Deduce me Mr. Holmes." Sherlock hesitated; something in his companion's voice was throwing him off. He looked at the shorter boy, taking in everything he could.

"Well, I know you are studying to be a doctor, but you have plans to join the army once you have completed your schooling. You come from an abusive home, but the abuser hasn't lived there for at least three years. You have a brother that you don't get along with, and you haven't spoken to your father in at least three years, which leads me to believe that he was your abuser. You play the part of the obnoxious playboy, but in reality you would much rather be in a serious relationship." Sherlock stopped talking and glared at the ground, awaiting the harsh words that always followed his deductions.

"That was amazing." Sherlock's head snapped up to look at John. He registered the look of awe on the older boy's face and felt a blush take over his face.

"What?"

"That was absolutely brilliant. I have never seen anything like that in my life." Sherlock glared at the ground again, his cheeks burning darker than ever. "Hey, what's wrong Sherlock?"

"That's not what people usually say."

"What do people usually say?"

"Piss off; or something along those lines." Sherlock shifted uncomfortably as silence filled the gap between them. He heard a shuffling sound and watched as a pair of legs entered his field of view. He felt cold fingers on his chin and allowed John to guide his face to meet his eyes. The dark eyes of the shorter man were filled with so much emotion Sherlock was sure his heart was going to break.

"How could anyone be so cruel?" He whispered running his fingers along the sharp cheekbones of the younger man. He watched as Sherlock's eyes fluttered and he leaned into the touch. He couldn't help but smile softly. This young man before him had known so much in merely a glance, and he honestly didn't think himself worthy of such praise. The soft lights of the park made Sherlock look even younger than usual. "God, you are so gorgeous." A blush overtook the pale man's face. "Is it alright if I kiss you?" He asked so softly, he almost thought Sherlock didn't hear. He felt the slight nod of the boy's head and he leaned down, gently pressing his lips against the soft cupids bow ones. He kept the kiss soft and brief, not wanting to overwhelm the young man. He could feel Sherlock trembling against him. "Was that too much?" His voice was still a whisper as he spoke, gently tracing his fingers down along the pale skin of his neck to check the young man's pulse. It was racing and just bordering on too high.

"N-no, no I'm alright." Sherlock mumbled. He was aware that his body was trembling as he felt John gently take his pulse. He felt a flash of warmth run along his neck and chest at the intimate touch. "Well I can see why you chose to become a doctor." John blushed and pulled his fingers away from Sherlock's neck, resting his hand on his shoulder.

"Sorry, force of habit."

"You always check the pulse of your dates?" The pair chuckled for a bit, relaxing in each other's company.

"I should be getting you home. It's pretty late and I am sure Myc will want you home eventually." John laughed at the scowl that took over Sherlock's face at the mention of his brother. He stepped away and pulled Sherlock off the swing set. The younger man stumbled, John stepping forward to catch him. Sherlock straightened, realizing just how close he was to the shorter man. John looked up at the boy; he had forgotten how tall he was. Sherlock felt a rush of fire as he saw John's tongue dart out and swipe along his bottom lip.

"So that is what Mycroft meant."

"I'm sorry?"

"He mentioned that your tongue can be rather distracting, I can see what he means."

"You haven't even seen what this tongue can do yet sweetheart." Sherlock's breath caught and his eyes widened. John flushed; his jaw dropping at his own words. "I am so sorry, I wasn't planning on- God I shouldn't have said that." Sherlock found himself thoroughly enjoying seeing this strong, steady boy so flustered. He silenced John with a finger to the lips, reveling in the way the shorter man's breath hitched at the contact.

"You're adorable when you are blushing." John grinned up at him, staying silent against the long, cold finger pressed to his lips. "I would not object to learning more about what that tongue can do." John felt his entire being heat up at the younger's words. He parted his lips slightly and darted his tongue out to taste the skin of Sherlock's finger, hearing the younger suck in a broken gasp. He grabbed the slender wrist and moved the finger away before gently placing his hand on the back of his neck. He pulled the younger man in and kissed him.

This kiss was like fire, sending jolts of electricity throughout Sherlock's thin frame. He had been kissed before, but it had never felt like this. He parted his lips against John's, his knees going weak as he felt John's tongue brush against his own. Mycroft was right; John was very skilled with his tongue. Far too soon, John pulled away, breathing heavily and grinning.

"You're gorgeous when you're flushed." He whispered, gently caressing Sherlock's cheeks. He leaned up and pressed another soft kiss to the younger man's lips, chuckling as he pulled away and Sherlock tried to chase his lips. "Slow down sweetheart, I do have to get you home in one piece." Sherlock whined and John chuckled, pulling himself from the grip of his date. He took Sherlock's hand and led him out of the park, giggling and making small talk. They soon made it back to Sherlock's house and stood outside the door, snogging gently in the pale light.

"So, would you be interested in doing this again?" John asked timidly when they finally broke for air.

"Snogging on my front porch? Yes, I believe I could be swayed to do this again."

"Not just this you git, I mean the date. Would you be interested in dating me?"

"You mean, like, a relationship?" John feels a strange tightness in his gut, sensing impending rejection. He nods, biting his bottom lip as he studied the younger man's face. "John, I am really not the best person to be in a relationship with. I tend to not care for myself, forgetting to eat and sleep for days at a time. I have an addictive personality and at any point I could fall back to drugs and cigarettes. I don't talk for days at a time, and I can be incredibly abrasive-" John pressed a series of soft kisses to the younger's lips, using the tip of his tongue to gently lick at the full lips.

"Sherlock, are you forgetting that I dated your brother? I know how to handle the eccentricities of a Holmes." Sherlock whimpered slightly as John sucked on his lower lip. "So, I ask again; do you want to go out with me again? Be my boyfriend maybe?" Sherlock grinned and nodded, leaning back in for another kiss. Things were getting heated when the front door swung open, revealing a rather irritated looking Mycroft.

"Could the two of you please stop snogging outside where the whole world can see you?"

"What's wrong Myc, jealous that your little brother is getting more action than you ever got?" Sherlock blushed furiously, not only at getting caught, but also at what John had implied.

"Oh do stop lying John; you know full well how that at least six of our nights ended-"

"God please stop talking!" John and Mycroft looked at Sherlock in shock; the younger man was covering his face with his hands. "The last thing I need to hear is about how my new boyfriend used to shag my older brother." John giggled and pulled Sherlock in for a hug.

"Sorry love, I should get going though. I'll see you tomorrow." He pressed a gentle kiss to Sherlock's lips before turning and walking down the drive.

This could be a very interesting relationship. He could help the grin that split his face as thoughts of everything he could do to the shy boy filled his head.