Hoy!

Been meaning to post a story like this for a while - seeing as I write a lot of smut, and Alvon fans everywhere deserve to see some of it ;)

Also I didn't realise how long this "one-shot" is, so there will be two "chapters" to separate the word count. I hate submitting blocks of writing, sorry. I'll be posting the "chapters" close together though. (Hope you don't mind that it's so long, I tend to do this with sex scenes :/)

Enjoy, guys!

'You have no idea how weird this is.'

'Trust me, I do.' Simon locked the bedroom door with particular focus. 'But let's not get too caught up in that; I don't want this to mean anything.'

Alvin grinned and kicked off his shoes. 'Sounds like my kind of gig,' he rested his hands on his hips as Simon began crossing the distance. 'But not yours.'

Simon blinked and met Alvin's gaze in defence. 'Of course it's not, but my class is. And I'm not keen on the idea of failing it on the final assessment.'

'You know, it's kind of frightening what you'll do for an A.'

'It's kind of frightening you agreed to this.' Simon returned condescendingly. 'What do you get out of it?'

Alvin sighed and shrugged, slowly beginning to remove his t-shirt. 'I mean, sex is sex, right?' He finally answered.

'…more or less…' Simon raised a brow as he came to a stop in front of Alvin. 'But you must be curious. That, or you're attracted to me.' He smirked at the thought and Alvin returned it falsely.

'Keep dreaming, brother dearest.' Alvin took to scanning Simon, wondering why he hadn't started undressing. He was honestly shocked that the, usually conservative, bespectacled boy had gone to him about this – but now they were in the moment, it was starting to make sense.

It was far more likely to stay private this way. It was easier than getting to know someone new just for the one night. No one would get hurt or upset. The experiment was totally unbiased, because neither of them were romantically inclined towards the other.

But then, of course… it was also illegal.

'You sure you want to do this, Si?'

'Yes,' Simon nodded quickly and began to take off his jacket. 'Just remember to treat me exactly the way you'd treat a girl.'

Alvin removed his long-sleeved undershirt. 'There's gonna be some obvious differences, you know.' He reminded, urging Simon to sit down on the bed by pushing against his chest.

'Just means more to write about…' Simon figured, descending dutifully. He couldn't help but shift away when Alvin joined him. He'd spent about three weeks trying to re-wire his morals to be okay with this, but the event itself was going to be very different. He stared at Alvin carefully. 'Don't hold back, either.' He finally requested. 'I-I want you to do this like it's completely natural, for both of us.'

'This deal just keeps getting better,' Alvin grinned, his eyes falling shut as he leant forward and started closing the distance between the two.

Simon's heart sped up in panic and he moved backwards, trying to labour his breathing as Alvin opened his eyes again.

'Yeah, girls don't naturally back away from me,' Alvin smirked, raising a brow. 'Do you want me to hold back?'

'No, I…' Simon shifted himself back towards Alvin. 'I just don't know what kissing you will feel like.'

Alvin shrugged. 'So… you want a few test-runs?'

'Just one,' Simon insisted, his eyes shifting around the older boy's face.

'Why don't you lean in,' Alvin motioned forward, 'so you don't jump back again.'

Simon frowned as he moved closer. '…I didn't jump…' he closed his eyes as Alvin scoffed a short laugh. 'Hurry up, Alvin…' he muttered.

Alvin smirked and gently closed the distance, pressing his lips lightly to Simon's.

The younger of the two tensed instantly, that reflex to shoot backwards was creeping up his spine, blatantly obvious. Get a grip… he told himself, you should be able to handle this… it's not even the main event…

Alvin steadily parted his lips and caught Simon's again, silently fond of how nervous the bespectacled boy was. Eventually, Simon joined the slow catch-and-release, shaking slightly.

The soft experimental kiss went on for a while, their bodies non-committedly moving closer to each other as they got used to the proximity and the sensory overload.

Simon was blushing hard well before they parted. In all honesty, he was rather breathless, and when they did break the tender kiss he had to remind himself that this wasn't over.

'Alright…' Alvin gave a coy smile, running his hands down Simon's arms, soothing and suggestive at once. 'You ready to jump a few levels..?'

'Mhm…' Simon nodded, managing to sound mostly sure. He forced over an indifference as Alvin leant in again, and appealed to his confidence by starting the new kiss himself.

But Alvin may as well have done it. It was a far more advanced kiss than Simon could have anticipated, and he immediately felt himself jump as their mouths connected in a much deeper way than before.

And this time, he didn't have any moment to get used to the hungry kiss taking place. He could barely keep up with it, and couldn't for the life of him process any appropriate way to feel as Alvin's hands began to roam, smoothing up his sides to hold him in place.

That was definitely a planned move, because Alvin parted the kiss a moment later and began trailing a series of chaste kisses down Simon's neck. The younger boy had to bite his lip before he could make some embarrassing noise, but he couldn't help but gasp as Alvin trailed his tongue back up his neck, and began to suck on the pulse just below his ear.

I think… it feels good… Simon was still trying to figure that one out. He felt overwhelmed and unprepared, but those kisses Alvin was artfully producing were meant to make his heart go haywire. Right..? I mean, that's what pleasure is, isn't it..?

He still couldn't tell, and was finding it significantly harder to stay quiet while Alvin worked on that spot. He knew there would be a nice purple mark there after this.

He didn't quite remember when Alvin stopped, but it was sudden nonetheless when their lips joined once again.

And they really joined, this time. Alvin was holding Simon much closer against him, and the kiss was incredibly firm as a result, their lips barely swept over each other like normal.

Simon quickly realised that this was another planned moment, and he would later, shamefully, admit to yelping when he felt Alvin's tongue drive through his open lips.

Oh, god… this was by far the most uncomfortable he'd felt so far. His heartbeat was getting painful, his cheeks were flushed dark crimson. I don't know if I can do this… he scrunched his eyes tighter shut and experimentally let his tongue up to meet Alvin's.

His entire body broke down in shivers.

He moaned, trying his best to keep it up despite how much he probably needed to faint. It was such a simple thing, he knew, but that invasion of his body – by Alvin, no less – was making him dizzy with uncertainty and slight repulsion.

But then… there was a distinct excitement underneath all of that. It was precious, but it was there, and was the only thing keeping him stationary for the make-out session.

Alvin dragged out the kiss' release, sucking gently on Simon's bottom lip and opening his eyes as he let go, eventually meeting Simon's grey-eyed gaze and holding it while they caught their breath.

'You're pretty good…' he commented, a small smirk crossing his lips. Simon then realised Alvin had probably overwhelmed him on purpose, probably trying to find a flaw just as he always did when they fought.

'Are you this forward with all your girls..?' Simon tried sounding sceptical, or condescending, but it definitely came out as shocked.

Alvin gave a slight shrug. 'You told me not to hold back…' he reminded, dropping his gaze to Simon's torso. 'Do you still mean it?' He locked their gaze again.

Simon shifted a little. Well, it can't get any worse… he figured, hopefully. 'Yes.' He nodded, taking in a slow breath before he straightened up and finally took off his shirt. He adjusted his glasses as he looked at Alvin again. 'But just… don't forget I'm…' he blushed and averted his gaze. 'I've never had…'

'No kidding,' Alvin chuckled, pulling his knees up onto the bed and facing Simon in a somehow more purposeful way. 'Don't worry, Si. I'll take things fast until that point – I've gotta make you want it. Badly. I won't do it until you beg, so don't ask me until you're sure.' He nodded to the bedside table. 'And we've got lube, so that should help with everything else.'

'Sounds reasonable…' Simon murmured, his pride was wondering if he would ever beg for it. He felt self-conscious just from the thought.

'Good,' Alvin hummed, leaning in again and sharing a softer kiss much like their first. He broke it and placed a hand on Simon's chest. 'Now why don't you lie down..? And I'll get the both of us nice and warm…'

Simon scoffed a little, but he shifted back, resting slightly upright against the pillows.

Alvin crawled to straddle Simon, placing his hands on the bespectacled boy's chest. 'So I treat you like I'd treat a girl..?' He checked, raising a brow. 'You still positive about that one?'

'Yes, it's the whole reason I'm doing this,' Simon rebuked impatiently.

'So is this like… role-play or something..?' Alvin mused, and sighed when Simon frowned at him in confusion. 'Are you gonna act like a girl?'

Simon blushed again. 'I don't know… I suppose that's part of the experiment.' He returned. 'I won't be trying to, if that's what you mean.' He tried to calm his already nervous breathing. 'You'll have to make some observations yourself, I guess…'

Alvin pursed his lips, scanning Simon's body. He quickly took his hands away from Simon's chest. 'Guess I wouldn't be touching a girl there just yet.' He chuckled, resting them beside Simon's shoulders instead. 'This will be fun…' he shifted his sapphire eyes over Simon's grey ones with a healthy sparkle of mischief.

'Glad you think so…' Simon blew out a breath and decided to close his eyes.

'You know, Si… you're surprisingly sexy,' Alvin complimented, bringing his lips down to Simon's jaw and trailing the light kisses once again to that, now highly-sensitive, pulse.

Simon wished he could reply to that statement with as much dignity as he wanted to, but he lost his train of thought when Alvin's lips made contact with what was about to be his first hickey. And again he had to shut his mouth tight, because Alvin was caressing the spot with a lot more sensual motions than the rough ones from earlier. Simon could decipher it, this time, and it felt good.

Maybe he can make me beg… he thought bashfully, swallowing another sigh of content as Alvin lifted a hand to the other side of his head, gently running his fingers through the younger boy's dark, unruly hair. This feels nice… He now felt conflicted because of it.

Should he find this "nice"? I don't feel like begging, so why do I already like what he's doing..?

His thoughts were driven when Alvin met his lips again, and he simply told himself to enjoy it. The slow motions were beginning to get faster, now, and he was determined to keep up – he had to want this. It wasn't an option anymore.

Alvin ran his hand down from Simon's hair, spreading his fingers along Simon's jaw to hold their kiss together more firmly, definitely picking up the intensity of each catch and release.

It took a moment, but Simon also realised that Alvin was beginning to put his body into the kisses, too. It was subtle, but he was rocking into and out of the kiss.

He pulled out of it for a moment, wetting his lips. 'You taste really good, Si…' he said, connecting their lips with a significant amount of depth for what was going to be a short one.

And he tastes like cherry… Simon noted as he finally let himself ponder it, following Alvin's retreat from the kiss eagerly. It was an addictive musk.

Alvin didn't pause as long this time, he dipped down and slipped his tongue into Simon's mouth before their lips connected, giving off a low moan that made Simon shiver as much as the slippery intrusion did.

It was total kudos to Alvin, as his statement about the taste made Simon a lot more eager to return this particular kiss. Before long he was exploring Alvin's mouth, moaning at the full flavour and the very notion that he was actually participating in this.

It was definitely feeling good.

Alvin's hand dropped further, his fingers spread slowly over Simon's chest. After not two seconds massaging the area, Simon noticed Alvin was smiling; and sure enough the eldest parted their kiss while continuing to hold back laughter.

'Alvin –'

'I'm sorry,' he chuckled, pecking Simon's bottom lip and still grinning amusedly. 'I was just imagining you had boobs, and then the image got way too vivid and…' he laughed as he buried his head into the crook of Simon's neck. 'I'm sorry, I took your advice too literally,' he still planted a few kisses here, while Simon couldn't help but roll his eyes.

This was far too typical.

'I didn't tell you to think I was a girl, just treat me like one.'

'I know, I know,' Alvin propped himself up so their noses were millimetres apart, still smiling. 'I'm good, now, I promise…' he tilted his head slightly and entwined their lips again, contentedly moaning once more when their tongues met almost instantly.

He moved his hand down further still, just below Simon's stomach, and trailed his fingers teasingly back up again.

Which was a good thing, because Simon was about to protest the entire idea if it went any further. That place is not okay right now… He gripped the bed underneath him and tried to calm himself Alvin's hand made its descent once again, though, he felt his body beginning to shift.

He couldn't help that one thought going through his mind, telling him to swat Alvin's hand away from the personal area. Don't go there, Alvin… he found himself whining a little the next time Alvin made the slow suggestive motion. He knew he wouldn't be able to stop it from happening, but sorely wanted to.

The next time he grew closer still, and Simon turned his head to break their kiss, flinching and recoiling until Alvin stopped.

'You don't want me down here..?' Alvin cooed amusedly, his fingers braving the area, now, just dancing around the niche before Simon's crotch.

'Alvin, don't,' Simon blushed when Alvin came close again. 'It feels… really weird –'

'That's because you're hard,' Alvin teased in a sing-song voice.

Simon opened his eyes, staring at nothing with his brows straight in a frown. No, I'm not… I can't be… he didn't really want to confirm it. He bit his lip and met Alvin's sparkling eyes. 'I-I don't know if I should let… you… us…'

Alvin pouted playfully, letting up his hand for a moment. 'Well that puts a cork in your entire experiment,' he reminded, tilting his head thoughtfully. 'I thought you were enjoying yourself..?'

'I…' Simon's gaze shifted in uncertainty. He had been.

But that area was going to cause a lot of things to happen very quickly, and he wasn't sure if he was ready for that.

'Okay,' Alvin leant forward confidently again, 'looks like I have to make you really hard…' he figured gladly. '…until you can't stand those jeans anymore…'

Simon didn't quite have time to reply before Alvin kissed him deeply again, the older boy's fingers spreading back into Simon's hair and gripping very slightly to the rhythm of their kiss.

It was already an overload of pleasure, but Alvin soon let up and moved to the definite hickey once more, running his tongue over it once before he began to suck on the pulse, moving his fingers around and gripping Simon's hair tighter.

An audible moan escaped Simon's lips for the first time, he had his eyes closed as Alvin delivered this intense treatment, a voice in the back of his mind telling him he was getting a lot more worked up than he should have been. His hands began to lift up and smooth around Alvin's waist to hold him there. He was not allowed to stop.

And clearly had no intention of doing so. Alvin peppered kisses down to Simon's collarbone, now, running his tongue along the pronounced area and occasionally sucking on the thin flesh. If Simon had been able to think straight, he would have guessed Alvin was looking for the right spot.

As he couldn't think straight, when Alvin found it Simon gasped and moaned out a "yes!", one of his hands trailed to Alvin's head, fingers tangling into the auburn locks that weren't hidden by his signature cap.

He closed his eyes and focused on how good it felt, sighing in surprised content when Alvin's hand slipped down from his hair and caressed his waist instead. In fact, everything was becoming surprisingly pleasurable, even that subtle rocking Alvin tended to accompany his kisses with.

The older of the two finally let up on the pressure point he'd found, he shifted lower and trailed his tongue along Simon's smooth chest until he found a nipple and decided to focus his kisses on it, which finally earnt a physical response.

Simon arched his back slowly, breathing heavy and wisping out praises to continue. His hips made contact with Alvin's during the arch, but even when he settled he found his lower body was still under compression, and shifted himself around to try and escape from the pressure Alvin was applying.

The older boy noticed the shifting gladly, he pulled back and moved himself up to meet Simon's gaze.

'Alvin, you need to…' Simon groaned, never finding the relief. He opened his eyes and frowned at his brother. 'Do you mind?'

'What are you talking about?' Alvin returned the frown.

'You're… crushing my…' Simon stared when Alvin sat up properly, the eldest still acting confused. 'Wait…' Simon started shaking his head. 'N-never mind, no – I'm –'

'Whoa, that looks painful,' Alvin was staring, and Simon lolled his head back in shame. 'Sheesh, look at that, mine too…'

Simon blushed as he tilted his head up again. His heartbeat was starting to get uncomfortable again, he stared at Alvin's crotch and then shivered to note how close it was to touching his own bulge.

'Alvin, I still… don't…'

Alvin met Simon's gaze with a tiny, innocent smirk. He parted his legs a little more, and their hips really did meet. 'Simon, you've gotta want it…' He chided, and very smoothly began rocking his body on top of Simon's.

The younger boy felt like all the breath was knocked out of his lungs, he gasped and moaned and shut his eyes and gripped the bed sheet hard while Alvin started to move significantly faster, placing his hands on Simon's chest.

'Do you want those jeans off, now..?' Alvin asked in a low, husky tone that was very unlike the usual chipper one. 'I know I do…' He moaned, rolling his hips in wider arches.

'Alvin…' Simon whimpered, tears beginning to stain the corners of his eyes. It was getting incredibly painful. 'Just – okay, take it off, please!'

Alvin stopped moving, having to regulate his breathing before he shifted down Simon's body. He'd only just looped the button free on Simon's jeans, but the zipper instantly travelled itself down under the strain.

He wasn't usually into the idea of homosexuality, but Alvin couldn't deny the word "damn" was floating around his mind after that display. Simon gave a relieved whimper, but Alvin could tell that his briefs weren't all that loose either.

It explained the unexpectedly large package that burst out when Alvin lowered the elastic. He couldn't help but stare – this time purely in curiosity.

'How do you fit all this in your jeans?' He demanded, looking down at himself and back up appreciatively. So there we go… Simon's longer…

Simon took a moment to stop feeling so embarrassed before he propped himself up to see.

'Oh my god, Alvin, what did you do to me?'

Alvin blinked at Simon. 'Haven't you ever got hard before?' He rebuked.

Simon shifted self-consciously. 'Not… with purpose…' he admitted.

'You tend to... expand,' Alvin said modestly. 'But… I mean, you never looked that big to begin with…' He tried a light-hearted smile. 'These clothes don't help with that image, much.' He shifted down the tight-fitting briefs and jeans.

'I-it kind of… hurts..?'

Alvin raised a brow up at Simon as the younger boy shifted his legs to help remove the clothes. 'You must be close,' he commented, crawling back to his first position.

Simon pursed his lips, eyeing the proximity Alvin chose with slight warning, stifling how satisfying it was to see Alvin sitting right up against his manhood. 'W-what are you… going to do now..?'

'Good question…' Alvin tilted his head, shifting his eyes over Simon's. 'Do… you want to cum now or –?'

'No.' Simon shook his head quickly.

'Mm…' Alvin smirked a little. 'I'm not sure either of us have too much control over that.' He looked down for a moment before he shrugged and kneeled up, beginning to undo his own jeans. 'I guess you should start getting used to my body, then.'

Simon automatically shifted back. 'Do girls usually… you know… interact, with…' He nodded to Alvin's crotch.

Alvin smiled while he shifted his jeans down. 'Most of the time.' He nodded, slowing down as he moved to his briefs. '…do you want to try it..?' He mused suggestively.

Hell no… Simon swallowed nervously and shook his head. 'I-I don't think you need any help getting aroused…' he noticed with a blush. He couldn't help but stare at Alvin's newly-exposed member – of course, he'd never seen it hard like this before. All strong and healthy…

'That's true…' Alvin bit his lip and smiled, noting Simon's gaze was held fast. 'This whole setup is definitely exciting enough…' he shifted around to get his clothes completely out of the way. 'Got me going pretty well considering you haven't touched me…'

'I haven't..?'

'Uh-uh…' Alvin leant over Simon in predatory slowness. 'It's lonely at the top…' he pressed their lips together for a moment.

Simon stared at Alvin nervously when he backed out. I should probably fix that… and actually participate… 'Get…' he took in and blew out a steady breath. 'A-Alvin, get on your back.'

The older boy raised his eyebrows in excited intrigue. 'Really?'

'Go on…' Simon insisted reluctantly, shifting to sit up properly. Surely he won't want me there long… he figured, a distinct feeling of misery washing over him as Alvin sat back, propping himself up on his palms.

'You don't need to make me cum,' Alvin insisted encouragingly, 'just… explore me for a little while.' He rolled his shoulders to get comfortable. 'Do whatever you like, I'm sure I'll enjoy it…'

Simon pursed his lips and scooted closer, blushing when Alvin parted his legs rather than letting him straddle his hips.

'Just in case.' The capped boy winked mischievously. 'There's a lot you can do down there…'

'Alvin, please,' Simon flinched, shifting as far forward as he dared go, now. 'Don't make me regret this…'

Alvin rolled his eyes. 'Calm down, it's just an option.' He shifted his sapphire gaze over Simon's stormy-grey eyes in flat curiosity. 'You keep acting like we're not going to have sex.' He noticed, watching his brother's cheeks light up again. 'We are, you know.' He said clearly. 'I'm going to be inside of you.'

'Alvin –'

'Maybe that's it – maybe we've been too… "PG" in the lead-up,' Alvin lamented, 'you definitely made me hold back, and I thought you didn't want me to.'

Simon gave Alvin an even, calculating stare. Why was he so honest all of a sudden? He gets that way when he wants something… Simon averted his gaze for a moment, though, because Alvin's reminders were still very true.

There's no way I'm going this far just to back down now… what would that do..? No, if I wanted to back out, I should have done it the moment Alvin came into the room…

'Okay…' he nodded, closing his eyes. 'You're right.'

Alvin blinked, not having too much time to bask in the rare victory before Simon leant in and kissed him. It was a strangely unique kiss, too – tender for sure, but somewhat uneasy. Alvin returned it in no rush, savouring how sweet it felt.

(I'll have the next part up soon) :)