Chapter Text
Gym Daze
Part I: Anaerobic
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(I) Anaerobic exercise is a physical exercise intense enough to cause lactate to form. It is used by athletes in non-endurance sports to promote strength, speed and power; and by body builders to build muscle mass.
As hard as it is to believe, Gendry had been a runt when he was a kid. Not as small as Arya, which he liked to remind her every time she tried to tease him, but small enough that no one would have believed he’d grow to be over six feet tall and packed with muscle, despite who his father is. But at thirteen he had a growth spurt so severe, his mother was buying him new clothes almost every week.
He loved playing sports, so the growth spurts came in handy, and before he knew it, he was packing on muscle. It wasn’t until High School, though, that he started exercising to hone his abilities. Of course, at the time it had little to do with enhancing his physique and everything to do with impressing Arya, who had been going to the gym, and taking her fitness seriously since she turned fourteen. She was muscular and strong for her age and any lingering baby fat had since disappeared as she worked out religiously to keep up with her chosen athletics.
As Gendry’s crush on her slowly manifested, he took on the task of keeping up with her at the gym. He was desperate to gain her attention without making it obvious that his feelings for her had shifted so drastically that he was hopeless around her. Thankfully, he quickly learned to love it as much as she did, and tagging along with her, turned into a mutual love of personal fitness.
For years they worked out together. In high school he drove them to the gym every afternoon after school or after extracurriculars. In college, they went first thing in the morning before classes and after graduation, when they both moved down to King’s Landing, they found a new gym and a new schedule.
Gendry had always focused mostly on building muscle, especially after he decided to switch from football to rugby. Arya on the other hand had switched between building strength and stamina, which helped her through Fencing and ballet. With strength training, they helped each other out as best as possible, spotting each other and make sure they didn’t over do it.
Gendry and Arya had been going to the same gym for years. It was a mid-sized, privately owned business, and they’d made friends with the couple who owned it pretty early on. Given the nature of their work, finding time to go had grown difficult over time, so the owners had given them keys, knowing they could trust them to take care of the building no matter what time they showed up.
So, Arya and Gendry had a decent routine. They went to the gym when they could, almost always together and life went on was normal, even after their fuck buddy agreement. Well, things weren’t totally normal, a fact they’re sure the owners wouldn’t be to thrilled with if they ever found out.
Gendry is sitting up on the weight bench, curling dumbbells while Arya runs on the treadmill across the aisle, her back to him as she looks up at the television on the wall. She watching some reality show about saving failing restaurants, laughing whenever the host starts insulting the inept business owners who think they know better than him. As much as he enjoys the show himself, his eyes are not focused on the television, but rather the bounce of Arya’s ass as her feet make contact with the spinning belt. He’s debating with himself whether or not she’s wearing underwear, failing to find a panty line through her tight grey yoga pants. He’s so focused he fails to notice that she’s finished her run and is now facing him, waiting for him to acknowledge her.
“Gendry?” she calls out, pulling him from his thoughts. “Enjoying the view?” she smirks.
He blames the heat spreading across his face on the exertion of lifting weights, but Arya knows better. “Are you wearing underwear?” he asks.
She shakes her head. “Nope, I wore a thong to work and I forgot to pack regular panties in my duffle.”
“Huh.” Gendry huffs shortly, setting the weight back on the rack and standing up. He walks passed her toward one of the bench presses and lays down, determined not to think about the sight of her ass bouncing in his face. He’s been working out with her for years and while he’s been attracted to her for all of it he’s always managed to keep his mind from wandering too far into the inappropriate. Perhaps his problem now, is because he’s finally seen what lies beneath all the tight spandex pants and loose tank tops. Whatever the reason, he found it rather difficult to focus on his reps with the raging hardon in his shorts.
For the second time that night, Arya sneaks up on him, moving to stand at the head of the bench, looking down at him. “Need a spotter?” she asks, a naughty gleam in her eyes.
“Um…” he hesitates, staring up at her, the long barbell suspended in his grip above him. “I think I’m okay.” he tells her, the glimmer in her eye shining brighter than ever.
“Are you sure?” she asks, moving around the bench to stand at his side.
“Pretty sure.” he almost squeeks.
“You don’t sound so sure.” she continues and Gendry forces himself not to drop the barbell as she steps over him, straddling his waist where he lies on the bench.
“Arya…” he breathes, straining. She climbs up on him, her legs bent back, feet hooked over his splayed thighs. Her core rests right over his groin, his hard member twitching at the contact. “Arry, I don’t think…”
She hushes him, tilting her hips ever so slightly. “Don’t think, just feel.” she tells him, rubbing herself up and down his crotch.
“Fuck.” he curses, arms shaking. He brings the barbell down to his chest and in response, Arya shifts backward. When he lifts the bar again, she shifts forward. He repeats the process and so does she. She copies his movements and pace. If he moves faster, so does she. And eventually she’s moving so quickly, he’s close to dropping the bar. He replaces it on the rack and brings his hands to her hips, spurring her on when she tries to stop.
Gendry is taking in deep gasping breaths as she writhes on top of him, his hips thrusting up little by little involuntarily. “Gods Arya.” he gasps out, on the verge of climax. She grinds down a little harder, her own breathing strained. He tenses underneath her, hips flexing up, eyes screwed shut as he lets out a long rolling groan, his release wetting the front of his shorts.
Gendry goes boneless against the bench, trying to catch his breath. He groans in protest as Arya shifts against him, climbing off his lap. She moves up, beside him, leaning over him and kissing him softly, before pulling away. He opens his eyes to see her turn away, mustering the strength to reach out for her before she can get too far away, pulling her back against him as he sits up. She squeaks at the sudden movement, bracing herself with her hands on his knees.
“That was very dangerous, Arry.” he growls against the shell of her ear. He feels her shudder against him, thigh muscles clenching. “Did you come?” he asks, releasing one of his arms to trail down to the juncture between her thighs. The sudden gasp as he barely touches her is all the answer he needs.
Gendry stands, still holding onto her and lets her slide down to stand on her feet again. He turns her to face the bench, and gently guides her to sit. He goes to work, changing out the weights for her and when he was finished he urges her to lay back, feet up on the bench, knees bent. She begins her reps, trying not to focus too hard on what Gendry is clearly planning, but as he pulls her yoga pants down, presses her knees to her chest, she loses the battle and is forced to replace the weights before she drops them.
“Ah.” she gasps as he buries his face in her pussy. He runs the flat of his tongue up her slit, lapping up her arousal, before settling at her clit and sucking it between his lips. She moans, her body rung tight and she scrambles to grab onto the bar above her head, desperate for an anchor. Her thighs tremble at the onslaught of pleasure. “Gendry.” she whines.
She feels his smirk against her, but she doesn’t have time to be mad as she feels his fingers at her entrance, pushing inside. He continues to suck at her clit, curling his fingers up inside her. “Fuck.” she swears, feeling her climax nearing. She whines and gasps as she gets closer and closer, his ministrations remaining steady. Her toes curl as she cums, knees drawing up further as her entire body convulses. Gendry doesn’t relent though, licking and sucking her through the pleasure, prolonging her orgasm until she feels like she’s going to lose her mind.
“S...stop.” she gasps. “No more.” she sounds pathetic, she knows, but she can’t help it, it’s too much. Gendry pulls away and infuriating smirk on his face. “Asshole.” she mutters, as he gently lowers her legs.
Gendry chuckles. “A hell of a thing to say to a man who just made you cum.” he tells her, smug. She groans as he makes her move, pulling her pants back up.
“Being good with your mouth and hands doesn’t make you any less of an asshole.” she manages.
Gendry grins, scooping her up into his arms. “Think it’s time to hit the showers.” he tells her, carrying her off toward the locker rooms.