No Pain, No Gain — ljn
pairing. gym-rat!jeno x aider!reader genre. fluff, (kinda)friends-to-lovers, a dash of hurt/comfort, slice-of-life wc. 4.3k summary. Jeno’s well aware that he looks like an idiot in front of you, but what else could he do when just the sight of you makes him feel like a kid with a schoolboy crush?; or in which, Jeno’s been coming to your office with the tiniest of scratches just so he has an excuse to see you warnings. mentions of minor injuries (fake & real) and some bleeding (nothing super detailed but it’s still there), I sorta wrote this as if it were like a sitcom, cliche scenario an. clearing my wips! yet another fic set in the most random place u can possibly think of and it’s bc I (unhealthily) romanticize everything (×-×)—I started writing this during my gym rat (mouse?) era in 2023 but never finished it til now oops dk if its any good,,, enjoy!!
“I can’t move my thumb.”
You use your finger to smooth down the sports tape over its first layer, gently grabbing the younger boy’s wrist to inspect your work, “That’s the point, Chenle.”
“How am I supposed to play basketball with this,” Chenle pouts, bringing his taped thumb and wrist to show you as if you weren’t the one who just did it. His posture grows worse at the realization of his small injury and now he’s slumped on the bed.
You sigh and repeat yourself, “That’s the point. You need to rest it or else you can get an injury worse than this. I recommend maybe a week? But I’m not a doctor.”
You start cleaning your station up, fully expecting Chenle to understand and leave. But instead, he remains seated on the medical table, pouting. You know he’s trying to get you to change your mind, but seeing that he reported his wrist feeling tight and stiff, you know that it’s sprained and playing with it could make things worse.
“Chenle, I’m being serious,” you groan, “You need to rest it or you can’t play basketball for the rest of your life.” You were obviously exaggerating, raising your brows for even more emphasis. If he won’t listen to you by simply telling him, you might as well scare him into listening to you.
“Rest of my life?” He frowns, looking down at wrist, “I… I guess a week doesn’t seem too long… Thanks Y/N.”
You smile, relieved that he’s choosing to listen to your advice, “I’ll see you next week then?”
He nods and gathers his duffel bag and his sweater, dragging himself out the door of the first aid room.
You turn away from the door, ready to busy yourself with some housekeeping items when you hear a knock at the door. It’s quiet, and you almost think that you were imagining the sound, but when you turn to face the door, you’re met with the vibrant gaze of Lee Jeno, accompanied by a sheepish smile.
Ah… Lee Jeno—of course.
“Almost thought you weren’t going to show up today,” you joke, “What happened now?”
To anyone unfamiliar with the two of you, it might come across as if you weren't exactly doing your job well, seemingly rushing through treatments even when faced with potentially serious injuries. However, the guy standing in the doorway right now has been delivering the most poorest excuses for injuries you've ever heard.
Sure, perhaps a couple of questionable 'injuries' wouldn't bother you much, because maybe the person was just overly cautious about their well-being. But when Jeno strolled into your office recently with the tiniest scratch on his left calf, you couldn't help but suspect that something was definitely up.
“I need ice,” Jeno side-steps into your office and pulls the corners of his lips higher on his cheeks, “Please?”
“Next time, just jog over to the nearby McDonald’s and get ice there,” you say jokingly. This was his nth time in the past month asking for ice. You wonder if he’s just been using it to put into his water or if this dude just has some kink involving ice.
You only question Jeno’s recent tendency to visit your office because, ever since you started working at the gym, he's been a regular. Hell, his physique alone is proof to his long-standing commitment to the gym. It just doesn't add up that Jeno, with his apparent gym ‘seniority’, would be falling victim to injuries so frequently.
“Here you go,” you hand him a small, transparent bag that was partially filled with ice, “Anything else?”
Jeno’s irises fall to the right corners of his eyes in brief thought, “More… ice?”
You groan to conceal your amusement and move closer to Jeno, “Goodbye, Jeno. See you again another day!” You gently place your hands to his elbows, spinning him around and out your door.
“No, wait I—“
“See you!” You wave, leaving Jeno no choice but to actually take his leave.
Your coworker Jaemin sees the interaction from the front counter, and seeing that there weren’t any gym goers coming into the facility, he waves you over.
"Everything alright?" he asks, his gaze flicking briefly from the computer screen to you.
You glance at his screen and notice a game of minesweeper unfolding. Suppressing a snicker, you retort, "Yeah, same reason as last week." Swiftly, you click on an empty tile on his minesweeper grid, revealing the mine locations.
“I’m trying to help you and you do this,” Jaemin clicks his tongue against his teeth and diverts back to the situation, “It’s not in a creepy way, is it?”
You give yourself a moment to think everything through, “I’m not sensing anything weird or creepy with it, if I’m being honest. He’s going about it… in a cute way?”
Jaemin lets out a hysteric laugh and it echoes throughout the gym, “A cute way?”
"There's no other way to put it," you casually shrug. Leaning against the desk, you absentmindedly flip through the management binders laid out before you.
Jaemin's brows knit, his curiosity piqued. "Cute, how?"
“I don’t know.” You’re lying. You know damn well what you meant.
Every time Jeno decides to pull one of his ‘stunts’, he’s at your door, eyes all glossy and resembling a hopeful puppy. And when you choose to pretend not to notice him, he doesn't hesitate to clear his throat (rather obnoxiously) or hum out a soft, "anyone home?" even though you're clearly rummaging in your cupboards for more supplies.
Jaemin reads right through your feigned innocence, eyes narrowing, “Sure you don’t.”
“Well, it’s not something I can explain,” you groan, “Just take my word for it.”
“Okay… cute… does that mean you’re enjoying all this?” Jaemin’s eyes wiggle your way and you’re glad that no one’s around to see or hear this.
You scoff, “Enjoying what?”
"Come on, Y/N. Let's not play naive," Jaemin smirks, "Jeno is practically inventing reasons to see you.” Jaemin pats your head like you would a child, which you dodge almost immediately, “Which is honestly disappointing. A guy like Jeno could probably think of something way better but he resorted to something so basic.”
You glare at Jaemin, your annoyance evident, “I hate that you’re probably right.” Because what else could the reason be? Jeno couldn’t be that concerned for his well-being. And you distinctly recall questioning your other coworker, Xiaojun, about whether Jeno tends to show up frequently on your days off. His response? A shocking no.
“I always am,” Jaemin brushes non-existent dust off of his shoulder, “But you didn’t answer my question.”
“What question?” At times like these, you have the memory of a goldfish.
“If you were enjoying it,” Jaemin clarifies, "You did call it cute, and cute usually equals enjoyment."
There were a couple ways you could go about Jaemin’s question. Was he asking if you were reciprocating this attraction Jeno seemingly had for you? Or maybe he wanted to know if you found amusement in the ongoing situation?
Regardless, your cheeks betray you by warming at the question and the thought of your answer sliding off the tip of your tongue.
“I’d be lying if I said no.”
—
It’s no surprise when Jeno shows up to your office two days later with the same smile plastered on his face.
He’s standing right outside of your office, waiting for you to welcome him in. When you do, he enters the room slowly, greeting you as he moves toward the medical bed situated at the far corner and away from the entrance.
Jeno watches as you rake through a pile of disorganized supplies, “How are you?” You weren’t in search of anything specific, but you were trying to busy yourself now that Jeno was in the room with no clear purpose.
“I'm all right," you reply casually, your voice calm. "You?” You quickly glance up at him and almost crumble to your knees. Today, Jeno is sporting a black muscle tee and grey sweatshorts, and though you've never really taken notice of his outfits before, you secretly (and shamefully) remind yourself to start doing so.
“I’m okay,” Jeno hums, “I was wondering if I could get a heat pack?”
You take a good look at him and narrow your eyes, “It doesn’t look like you need one.” But regardless, you make your way toward the heat packs sitting in a cupboard by the fridge. You simply wanted to hear what his reason was this time.
“My quads are really stiff today,” Jeno replies, subtly gesturing to his legs, “I could barely get through leg day with them.”
“Well, this should work,” you say. You pop the pack and wrap a towel around it, “There you go. See you!”
“Can I stay here for a bit?” You don’t see the way Jeno pouts. You’re too busy making your way to your box full of miscellaneous things. He presses the pack against the upper side of his thigh, remaining seated on the bed, “I’ll leave when the heat pack is finished.”
Jaemin’s voice echoes in your head, "Jeno is practically inventing reasons to see you.” And you can now see that it was painfully obvious.
“Of course,” you say, “Take as long as you need.”
You move on to organizing the supplies, trying your best not to mind the pair of eyes that were burning holes into the side of your head.
“So…” Jeno starts, “How was your weekend?”
“You don’t need to make small talk you know,” you say, pulling out three pairs of medical scissors, “You could take a nap or something.” With your back turned to him, you go to put the tools away, “I don’t mind.”
Jeno swings his legs in the air and slumps, “Yeah, but I—uh—do want to make small talk.” He’s half-assedly holding the heat pack to the side of his thigh, growing annoyed that it wasn’t staying in a specific place. He resorts to pinning it under his thigh.
“Which I also don’t mind,” you say, biting back a smile, “My weekend was okay… stayed home and relaxed. Nothing super special. You?”
You stop and turn to look at him, keeping your eyes trained on the man who was now leaning back against the wall. The position looks uncomfortable, yet Jeno appears to be content.
“Similar to yours,” he replies, “Except Hyuck forced me to play a few games online with him. It was fun, actually! But don’t tell him that.”
You let out a snort. You’re familiar with Donghyuck, recalling how he and Jeno had made a deal that if Jeno managed to bring him to the gym for a few workouts, then he had to play some of his PC games in return.
“How’s he doing anyways?” You question, “I haven’t seen him in a while.”
Jeno’s brows furrow for a sliver of a second before they sit back to where they had originally been, “Last leg day killed him, so he’s given up until he recovers.”
“Ah,” you giggle, “Can’t keep up with you, I’m guessing?”
Jeno shakes his head, bangs creating a blanket over his eyes. He sweeps them aside, “Not really. I don’t really go hard on leg days. I’m more of a back and biceps type of person.”
Your eyes defy you as they scan Jeno’s arms. You blame him. His statement was practically an invitation to look at his upper limbs as if you needed some kind of evidence, “I believe you.” It comes out a lot more flirty than you intended and you want to sprint out of the room before you make one more wrong move.
“O-oh,” Jeno stammers. It was a sight seeing Jeno grow shy, using his hands to hide arms. And although he was hoping to conceal them, the man forgets that doing so only means he had to flex his arms, “Thanks?”
You’re not sure how to reply, resorting to rummaging through the same box. You find some empty rolls of tape and you toss them in the trash. How do you even go about this conversation? Say ‘you’re welcome’? Weird. Ask him about his routine? No, it wasn’t like you were looking into building your arms. Ask if you could feel his arms?
Shut up, brain, be fucking for real right now.
“Y/N?”
“Hm?” You look up and Jeno’s looking back at you expectedly.
“Sorry, I zoned out a little there,” you sheepishly confess, playing with one of the box’s flaps, “Did you say something?”
“I… uh, nevermind, it doesn’t matter,” Jeno clears his throat, “It was just about—um—something. But it can wait another day.” He smiles and it just about reaches his eyes.
“Wait, no, tell me,” you frown.
“It’s…” Jeno’s eyes flicker back and forth, contemplating if he really should go through with his question. He wants to—he really does—but his words fail him, teeth biting at his bottom lip.
“It’s really nothing, ha-ha!” You watch as his gaze drops to the heat pack suffocating underneath his thigh. He uses the back of his hand to feel it. It’s still very warm, but regardless, he uses it as an excuse. “I’ll just take my leave… Um, I guess I’ll see you around?” Jeno slips off the bed, tossing the pack into the trash before he moves past you.
“Wait, Jeno…” You make another attempt to stop him, guilt slowly creeping up on you, curiosity accompanying it because you should’ve been listening.
For once, you wished he stayed just a bit longer.
—
It’s been almost a week and a half since Jeno last visited your office.
But who’s counting?
You check once, twice, thrice over your shoulder for Jaemin’s presence, nodding to yourself when you’re sure that your coworker wasn’t there to see the down-bad bullshit you were about to pull.
Pulling up the gym’s database, you quickly type Jeno’s name into the search bar. While it loads, which feels so so painfully long, your fingers tap against the edge of the desk. You can’t believe you’re doing this.
“Hm.”
Once Jeno’s profile finally appears on the screen, you follow his row to the Date Last Active column, seeing that he was at the gym this morning, two hours before your shift.
A low whistle knocks you out of your trance and you jump, almost knocking the keyboard off the desktop.
“Fucking hell, Jaemin!” You swing at his shoulder at a strength you knew damn well he wouldn’t even feel, “You think you’re funny sneaking up on me like that?”
“Yes,” Jaemin shrugs, “Misusing the database I see…” His eyes narrow at you, brow raising. Then, he smirks and pokes at your rib, “Stalking your boyfriend.”
“Shut up,” you quickly exit the application and pull up Jaemin’s minesweeper game, “He’s not my boyfriend… Acting like you don’t do the same shit with other gym goers…”
“I don’t see why you can’t just walk up to him and talk to him,” Jaemin sighs, “He’s still here, you know.”
“He is?”
“Awww your eyes lit up!” Jaemin teases, diabolically sticking a finger in your face.
You threaten him again, which Jaemin completely disregards out of spite.
“But tell me why he’s been coming to the gym more often when you’re not here,” Jaemin, like you, was quite familiar with Jeno’s routines, “Did you do something that would force the poor guy to change his routine all of a sudden? Sometimes he wakes up at ass o’clock to get his workout done.”
Your mind reels back to your last interaction. Playing back each and every second and overanalyzing each and every word that left your mouth that afternoon. Yeah, you probably did but you don’t want to think that you’ve scared Jeno away.
“I don’t think so?”
“‘I don’t think so?’” Jaemin mocks, “Writing ‘liar’ on your forehead would be more subtle than whatever the hell that was.” He pauses his game and decides to fix all his attention onto you, “Now spill.”
“I really don’t know, okay?” you groan, “Last time I spoke to him, I zoned out and I missed what he was saying and then he left and he didn’t even choose to repeat it or anything.”
Jaemin narrows his eyes at you, almost as if he’s lost all hope in his very good friend and coworker, “Y/N, did you not just graduate with a master’s?”
Your brows meet, “Huh? What do you mean?”
He mutters a dumbass under his breath, which completely flies past your head. “Nothing.” Jaemin smirks subtly, turning away to leave in hopes that you don’t ask any further questions.
“Where do you think you’re going?”
Jaemin gets flashbacks to his mom, “Uhhhhhhh, there?” The man points to nowhere in particular before taking off.
“Na Jaemin!” You call out. Your voice echoes through the gym and you groan, slumping against the desk before accepting defeat—because what did Jaemin mean? Was he calling you stupid or something?
Not even five minutes pass when you hear Jaemin’s voice boom over the speakers, “Y/N, you’re needed in your office. Y/N, you’re needed in your office.”
You look over to Jaemin’s office and shoot him a look that could kill. And again, Jaemin ignores your threat, grinning menacingly before he waves cause he knows he’s pissing you off. You’ve never grown used to this man’s attitude, but it doesn’t mean you don’t adore it.
Logging off the computer, you let out a huff and pad your way past the exercise machines and into your office. And from all that you were expecting, you sure as hell weren’t expecting to find a very worn out Jeno, the hem of his tank sprinkled in faint drops of blood.
“Jeno?” You don’t even try to mask your worry, fast-walking straight to him before you guide (practically tugging) him to the medical bed, “What happened? Are you okay?”
An annoying and almost spiteful grin shyly appears on Jeno’s lips before he turns his palms up for you to see. His hands were covered in blisters, some popped and others brand new. They looked extremely painful to even look at.
“Fuck,” you mutter, “Didn’t I say not to overwork yourself that one time?” You turn your back to Jeno and begin gathering all the supplies you need to treat his blisters. You’re rambling under your breath, words unrecognizable from where you’ve sat Jeno down.
Your heart’s beating out of your chest, mostly because this is the first time you’ve seen Jeno in a while. But to add his injuries on top of that? You’re certainly not sure how you’re keeping composure.
Meanwhile, Jeno really can’t do much but watch you move from one corner of the room to the other. He wants to get up and help, but by the way an eleven forms in between your brows, he’s reluctant to even say anything.
It’s funny because despite how aggressive you’re handling all the supplies, the second you make contact with his wrist, your demeanor changes, suddenly shifting to be more gentler. You hold his hands as if you were holding a newborn, delicately rotating them to understand what had to be treated.
“If it hurts, tell me,” you say quietly, “Actually don’t. I’m mad at you right now.”
Jeno’s head tilts to the side like a confused puppy. Then he finally says, “Mad at me?”
“Yes,” you grab a sheet of gauze and begin wiping away at Jeno’s palm, dabbing carefully when it comes to the blisters, “I’m mad at you.”
“Why?”
“This is why you need a break.” You ignore his question, grab new gauze and continue wiping away the new and old blood that’s accumulated in his palms. “Jeno, I know you like it here, but your body needs rest, too.”
A response sits at the tip of Jeno’s tongue and he’s not sure whether or not he should tell you. The last time he decided to take a step out of his comfort zone, you didn’t even hear him.
Does he want to try that again?
You spray his palms with disinfectant before applying some ointment to help them heal faster. At this point, you hadn’t done as much as looked up to make eye contact with the man.
“But..” Big step. “But this is the only place that I get to see you.”
What the fuck?
You hope Jeno doesn’t notice the way you freeze for a burning second before you try to play it off by grabbing long bandages. It’s a good thing he can’t see the way your heart is beating erratically—and you’re hoping he doesn’t hear it, too.
“You can literally see me wherever you want if you just asked,” you say nonchalantly, voice quiet, “But instead you resort to…” You stop yourself from speaking any further, unsure if you would even want Jeno knowing that you had suspicions of him pulling fake injuries out of his ass to make excuses to see you.
“I’m not even sure if you’d even agree to it,” Jeno confesses, “I like… I really like talking to you but—“
“But what?” You slowly begin wrapping the bandage around his wrist, making your way up to his palm.
Jeno can’t help but whisper, “You don’t seem to like me as much as I wished.”
You hold back a giggle. Jeno’s always so accidentally cute and he doesn’t even know it. It’s literally pissing you off that a man you’re fake-mad at is doing absolutely nothing to earn your affection, yet here he was, doing just that. “You don’t know that.”
“I do know that,” Jeno counters.
“No, you don’t,” you ping-pong back. The bandage crosses between his fingers and you manage to finish wrapping the bandage around his palm.
“I do.”
“Did you ask me?” You gulp, because at this point you’re afraid where this conversation was going.
“Well, do you like me?”
You move onto his other hand, grabbing another roll of the long bandage. You could feel the atmosphere in the room begin to shift and now you’re beginning to sweat in your light sweater.
“I do.”
Jeno clears his throat, “In the way I like you?” You groan. Of course he’d say that. It was a valid follow up question, simply because your answer could very much cover that broad spectrum of like.
You ask, “How do you like me?”
Jeno takes a moment to think about his answer, watching as you start replicating your work from his other hand, “I honestly… think it’s obvious how I like you.” “Mmm,” you hum. At this point you’re teasing him on purpose, “How so?”
“I make myself look like a fool when it comes to you,” Jeno huffs, “Ice? Heat packs? Who am I kidding…” Jeno scoots back in his seat and you follow, practically falling between his knees from the way he’s sitting. “Every time I come here looking for you, that’s when I gain the confidence to finally ask you out… well not always out but maybe for your number or just simply talk to you or something. I wanted to be friends and then more if it went well…”
Your movements slow, attention failing to even do a decent job at bandaging.
“But, when I finally reach this room and see you? It’s like I lose all that confidence and it’s stuffed in the bag with the ice you give me,” Jeno explains. “I’m even lucky enough that I can finish my sentences around you…”
You blink at his injured palm and the realization dawns on you. So this was what Jaemin was hinting at, “And that last time… you asked me out and—”
“And you didn’t hear me,” Jeno finishes, “And I couldn’t for the life of me repeat what I asked because my confidence plummeted and then the fear of rejection kicked in.”
Your hands have since halted, cradling Jeno’s hand as you try to calculate your next move. It’s now clear as day that Jeno has feelings for you, and you’ve slowly been coming to terms with yourself that you care a little too much about Jeno than a normal person should.
“Ask me now.”
“What?” Jeno practically jumps, startled and confused.
You drop the bandage roll and lightly tighten your grip around his hand. Looking up, you find that Jeno’s gaze has already been sitting and waiting for your own to meet his. You clarify, “Ask me what you asked then, now. This time, I’m listening.”
The reassurance from you lifts some weight off of Jeno’s shoulders, ones he didn’t know even existed. Then, he fixes his composure, moistens his lips and finally says, “Would you–um–like to go out for dinner with me?”
“My answer then and now are the same,” you smile down at your feet, suddenly feeling shy under his gaze, “I would really love to.”
Eyebrows reaching for his hairline, Jeno’s eyes widened, “Wait, really?”
“Really,” You nod. And although you try to look anywhere else in the room, Jeno’s eyes capture your eyes once again, holding them there for a few skips of your heartbeat.
You clear your throat and let out a breathy laugh, “Haha so um… let me just—“ You hastily pick up the bandage roll and return to your work.
It doesn’t take much longer before you finish, concealing and protecting his injuries under the bandages. “Now that you’ve got me, promise me you won’t overwork yourself like this?”
“I’ve… got you?” Jeno’s cheeks heat up at your choice of words, the shift between the both of you being so evident now that he’s experiencing a weird case of whiplash.
“Shut up,” you mumble, “Just promise me. I don’t wanna have to keep worrying about you getting hurt.”
Jeno laughs, completely enamoured at your own flustered state.
“Yeah, yeah… I promise.”




















