dahyun stood in front of donghyuck's bed with her arms crossed over her chest.

when she had woken up this morning, she had been surprised to see mark wasn't by her side, like he usually was.

she had shrugged it off, because it was 10am, and her boyfriend was surely eating in the kitchen or watching something in the living room. mark had been living here for more than a week, he could do whatever he wanted whenever he wanted. that is why dahyun didn't worry too much and stayed on her phone while staying in bed for a while.

but when she had finally found the motivation to leave her bed, around 11, she had headed directly to the living room, and she was rather surprised to see no one here. same for the kitchen. there was simply an abandoned glass on the counter, and another one on the drying rack. but no signs of dishes or food that could have been consumed earlier.

dahyun checked the bathroom, but to no avail. it was empty, and the sink wasn't even wet, sign that it hadn't been used since yesterday night.

the last room she hadn't checked was her brother's bedroom.

she usually didn't go into his room because it was never clean, there were always dozens of things lying around, and it often reeked – well, it was a messy boy's room...

but now that she had 'lost' her boyfriend, she was seriously starting considering entering donghyuck's room to see if he was responsible for his disappearance.

and so, dahyun had pushed the door open and entered, which brought us to the part where she stands in front of donghyuck's bed with her arms crossed over her chest.

she had finally found her boyfriend. yeah.

he was just sleeping, in her brother's bed.

well...

donghyuck was lying on his back, sleeping peacefully, just like he was supposed to do because it was his bed and his place to sleep.

and mark? mark was more on his stomach, his head placed on donghyuck's chest as his arm and leg were draped over the younger boy. and he was sleeping so peacefully, shamelessly clinging onto his girlfriend's brother.

and to top it all, one of donghyuck's arms was resting under mark's body while the other was loosely placed above mark's back.

"WHAT THE HELL IS GOING ON?!" dahyun yelled, making both sleeping boys jolt awake immediately.

"d-dahyun...?" mark asked, looking around tiredly.

"hyun... shut the fuck up, it's early..." donghyuk whined, going back to sleep.

"no, no, no." dahyun clapped her hands loudly. "none of you is going back to sleep. you tell me what's going on."

"what's going on is that i'm sleeping and you're bothering." donghyuck mumbled.

"i don't care about you sleeping, i just want to know why MY boyfriend is sleeping in YOUR fucking bed!" dahyun yelled, as mark started acknowledging his surroundings.

"your boyfriend?!" donghyuck sat up suddenly, startling mark that was still lying next to him. "oh, my fuck! what the hell are you doing here?!" he asked as soon as he caught a glimpse of mark.

"i slept here...?" mark asked, his eyes barely open.

"you fucking forgot to go back to dahyun's room last night...?" donghyuck tsked, rolling his eyes at the older boy.

"i fell asleep..." mark mumbled.

"wait, wait." dahyun interrupted them. "what about last night?"

donghyuck yawned loudly, rubbing his eyes at the same time.

"i couldn't sleep so i went to have a glass of water in the kitchen, and mark was there because he couldn't sleep either. so, we both headed to my room to talk for a while until we finally felt sleepy." he explained truthfully.

"really?" dahyun asked, rather surprised by the – somehow acceptable – explanation.

"yeah, why the hell would i even share my bed? i'm good on my own." donghyuck replied. "and don't you even trust your boyfriend?"

dahyun's eyes flicked between donghyuck and mark a few times before their finally fixed on her bother.

"i do. just wanted to make sure, though."

＃

mark felt the urge to slam his head against the wall to purposely hurt himself.

him and dahyun were cuddled on the couch while watching a random show – well, dahyun was watching and laughing every once in a while, but mark was too focused on his phone to even know what that show was about.

why was he on his phone you would ask?

well, mark was currently in a confusing period of his life, and he had lots of questions running through his mind, and he wanted answers. and what better way to get answers than searching on the internet?

for the past hour, mark had been surfing on the net, trying to find trustful answers to his internal questioning.

what is considered cheating?

how do you know if you are cheating on your girlfriend?

is it normal not to feel good when kissing your girlfriend?

what do to if i don't want to have sex and my partner does?

is it possible to grow feelings for someone when you have a girlfriend?

how do you know if you really love someone?

yeah, mark's web history was pretty pathetic and very terrifying.

but what was worse were the answers.

they made him sick. they made him want to abandon completely and just run to peru to breed lamas. they made him want to forget about everything. they made him want to hurt himself.

how could he be this stupid?

why did he keep getting close to donghyuck when he knew that both of them had obviously been very affected by the kisses they had shared?

why did he even want to get closer to donghyuck?

why did he find the boy so fascinating?

mark wanted to cry.

he had a girlfriend. a beautiful girlfriend with whom he was happy. him and her were the power-couple of their school. he had everything he wanted!

but why was he unsatisfied...? why had he started getting intrigued by donghyuck...?

mark didn't know what was happening to him.

he didn't know what was wrong with him.

but something obviously was, so, with shaking hands, he typed the question he had been trying not to think about: what to do if you think you have a crush on your girlfriend's brother?

he gulped reading the answers.

figure out why. be honest. avoid your crush. keep a distance. mind your own business...

these were the solution that the internet gave him.

they weren't bad. mark would have definitely tried them if he could, but they were incompatible with the more important problem he had right now...

as much as he was happy with his girlfriend, he knew that dahyun was slowly starting to get bored of him because of their lack of sexual activity.

and sadly, mark had little to no experience in that field.

the only one who could help him was donghyuck. the same donghyuck that made him question his feelings. the same donghyuck he was supposed to avoid...

but, thinking further about it, it was either avoiding donghyuck and not being able to become like dahyun wants, resulting in being dumped by his girlfriend; or either still asking donghyuck for help and keeping his girlfriend – and his crush by the same occasion.

yeah, mark was doomed.

"put your phone aside a bit!" dahyun whined, crawling onto mark's lap to hide his phone.

"y-yeah." mark nodded, locking his phone and wrapping his arms around his girlfriend.

"can you give me some attention...?" she asked, tilting her head to the side and approaching her face from mark's.

"of course." mark smiled, leaning forwards to glue their mouths.

and so, started another make-out session, tongues fighting for dominance, teeth clashing together, fingers gripping the fabric of their shirts, hands roaming all over the other's body.

it was hot, torrid, wild, and even lustful.

both were fully aware of it as they slowly started grinding against each other.

mark's mind was going crazy as he heard dahyun whimpering because of his actions.

but it didn't feel like it was the right type of crazy.

more like crazy because he was realising where this was leading.

dahyun had been begging him to watch fifty shades of grey with him.

she had been more intimate with him, not walking to the bathroom to change.

she had even asked mark if he wanted to shower with her once.

mark wasn't stupid.

he knew this meant they were going to have sex.

but he had absolutely no idea how to do it.

sure, he had watched porn, but things in real life weren't like porn.

there was no roleplay in real life, no fake moans or no lasting inhumanely long...

mark had no clue what sex in real life was like.

how could he know? he never had sex.

and he was sure he would mess thigs up completely if they had sex now.

not that he didn't want to. he just didn't know how to.

and if he fucked up now, he would lose his girlfriend for sure – at least, that's what he thought.

dahyun's lips pulled away from his, allowing mark to inhale some fresh air that was starting to lack in his lungs.

and he was surprised by a sudden wet feeling on his neck, only to realise that dahyun's lips had attached there, gently sucking on the pale skin, making him groan.

this felt good... mark wasn't even sure he would be able to make dahyun feel so good if he even tried...

the kisses were getting sloppier as dahyun often glued back their mouths together, increasing their level of arousal.

she even had started getting up, sign that they would be taking the following events to another room. and mark didn't need to be a graduate to understand that it was the bedroom.

his hands became instantly clammy as he panicked.

what was he even supposed to do?!

how did you have sex?!

why had nobody taught him properly?!

he was going to embarrass himself to the core, and he absolutely didn't want that.

mark was trying to think of an excuse, anything that could avoid him getting inside the room.

he didn't know what to say, and he couldn't actually say anything because dahyun's lips were dancing against his in a hit make-out session – that felt rather enjoyable compared to the last one they had had.

the boy's eyes widened when he realised they were entering the bedroom.

it was his last chance to find something. and after that, it would be the end. he would have no choice.

but thankfully, a phone rang, saving mark.

mark had never been so thankful in his entire life. he was ready to kiss that phone and even ask it in marriage if needed. this fucking phone had saved mark.

dahyun pulled away, pulling the device out from her pocket and looking at the contact's name.

"oh..." she mumbled, looking at mark with a guilty look.

"is there a problem?" mark asked, out of breath.

"no, it's just that... huh... choonhee's girlfriend just broke up with her, and... she's in a pretty bad state so... i had told her she could call me if she needed... and... yeah..." dahyun bit her lip, looking down at her ringing phone.

"answer then. don't worry. i'll wait for you. take your time." mark smiled, internally jumping to the ceiling.

"are you sure? you don't mind?" dahyun asked guiltily.

"of course not. i'll leave you alone." mark pecked dahyun's cheek before walking out, just in time for him to hear dahyun picking up the phone and say 'hello'.

mark led out a long sigh, passing a hand through his hair.

he had almost had sex with dahyun.

and he still didn't know any fucking thing about it.

but the main problem was that he would eventually need to know about it. and rather soon...

so, there weren't one hundred things to do in this situation.

what else could mark do than go to his personal teacher?

right, nothing.

so, that's what he did.

mark ran to donghyuck's room, entering without even knocking and slamming the door shut behind his back.

as soon as he was in, he approached donghyuck who was lying on his bed, staring at his phone.

"donghyuck, i... i really need your help." mark told.

"sure." donghyuck nodded. "with what?" he asked, standing up to face mark who looked pretty shaken.

"well... dahyun... she wants to have sex with me. i know it. she's been hinting it for a few days. and yeah, i'm okay with having sex with her. i mean... she's my girlfriend, and i'm attracted to her, so it's normal. the problem is... i don't know how to do." mark rapped faster than he ever had. "like, real-life sex isn't the same as what we see in porn, and i know that i will fuck up completely. so, please, help me... i need to know everything. where do i put my hands? when do i undress? should i be on top or under her? and do i put a condom? and lube? oh my god i haven't bought any of those! do you think i should buy them? and how do we pass from the kissing stage to the sex stage? do i have something particular to do, or will it simply go with the flow? i don't know donghyuck! i'm so lost and everything is messing with my- "

mark was cut in the middle of his rambling by donghyuck.

but not his words, neither his hand. instead, it was his lips that came pressing against mark's as his arms wrapped around the boy.

the kiss was more like a long peck, because no tongues were involved, and donghyuck pulled away after a second, as if the sole purpose of that kiss was to shut mark up.

"mark, everything will go with the flow." donghyuck declared, looking at mark's beautifully confused eyes, failing to contain his smile.

"b-but... i don't know how to do and- "

here they were again.

donghyuck's lips on his.

"stop talking and start acting then. you'll see what i mean." donghyuck murmured before plunging onto mark's lips another time.