Louis hitches in a breath and tosses his fake phone onto the end table. Harry palms him more firmly, letting his hands trace along the confines of his quickly forming erection. Louis thrusts gently into his grip just as Harry takes his hand away. Louis lets out a noise of protest until he sees Harry shift onto his knees and settle himself in between Louis' legs. He reaches for Louis' waistband and slowly drags his briefs down and off his legs. He throws them onto the floor.
Harry leans forward and presses open-mouthed kisses along his length. Louis' hand twitches as if to bring them into Harry's hair, but he stops himself. Harry smiles and licks along the side of his cock, stopping at the head to run his tongue under the foreskin and around the tip. Louis lets out a murmured "fuck" as his cock twitches in Harry's mouth.
Harry laves him with his tongue, occasionally putting him inside his mouth but only going down halfway and immediately pulling off. Louis lets out huffed breaths of frustration as Harry teases him.
"Enough," Louis growls, lifting Harry's head off his cock with a hand clenched in his curls. Harry pants and bites his lip, boring his eyes into Louis' heated gaze. "I know what you want, baby. Stop being a fucking tease." With that, Louis jerks Harry's head down and guides his cock into his waiting mouth. He doesn't give him much time to adjust, shoving his cock in deep. Harry gags a little and tries to move back, but Louis holds him firm. Rather than being annoyed, the action sends a shock of arousal shooting through Harry's body.
Harry relaxes in Louis' hold and sets to work doing what he does best. He swirls his tongue around as best he can with a stuffed mouth. Each time Louis pulls him back before pushing back in, Harry swirls his tongue around the head. Louis moans and relaxes his grip on Harry's hair, letting his fingers lightly massage his scalp.
"You're being so good, Harry. Take my cock so well," he whispers. Harry hums in appreciation, sending small vibrations along Louis' length. Harry starts to control the pace, comfortable that he won't gag, and lets Louis' cock nudge against the back of his throat. After a few thrusts, Harry grabs Louis' hips and stills him, lowering his mouth until his nose tickles the stubble of Louis' skin. Harry lets his throat muscles relax as Louis writhes underneath him, letting out muffled curses.
"So good, Harry, so good, fuck," he cries. Harry keeps himself there, swallowing around his cock to add to the sensation before pulling off.
"Fuck me," he pleads. Louis nods and tugs Harry forward to press his tongue into Harry's mouth. Harry whimpers and pulls Louis closer, digging his fingers into the back of his neck. Louis bites at Harry's lip and then soothes it with his tongue. They pant into each other's mouths as Louis brings his hand down to grab at Harry's little bum. Harry keens and arches his back at the contact. Louis huffs out a laugh and tugs Harry's briefs down his thighs.
"Lay down," Louis demands. Harry complies, lying with spread legs in front of the other man. Louis smoothes his hands across Harry's pale thighs, scratching lightly with his blunt nails. He leans down and licks along the sharp V's of Harry's hips, making Harry emit an aborted whine.
Louis lifts one of Harry's thighs and lifts it to press against Harry's chest while he spreads his other leg out to the side. He tilts his hips up and presses soft kisses and licks into the sensitive skin.
He lowers his face further and tentatively touches the tip of his tongue to Harry's entrance, tracing lightly around the rim. Harry hitches in a breath and arches his hips into Louis' face, but Louis shoves him back down, digging his thumbs into his prominent hipbones. Louis prods his tongue inside and feels Harry spasm and clench against him. Louis grins and removes his tongue, licking broadly over his hole. He brings one hand down and licks over his fingers before prodding one digit inside. Harry mewls softly in satisfaction while Louis slowly opens him up, licking around his fingers.
It gets messy quick, Louis suckling around his rim and laving his tongue around his fingers. He waits until Harry is a quivering, whimpering mess beneath him and then sits up, removing his digits from Harry's body.
Louis flips Harry onto his stomach and runs his fingers along his arse, dragging them down to his entrance and plunging them back in. Harry gasps and rocks backward onto Louis' hand, fucking himself on his fingers. Louis leans down to whisper obscenities in Harry's ear, making him clench his eyes shut and press his face into the sheets beneath him.
"Look at you, Harry. Gagging for it, aren't you?" Louis pants as he scissors his fingers wider and faster. Harry whines in response, murmuring unintelligible pleas. Abruptly, Louis removes his fingers, ignoring Harry's frantic protests. Louis leans down and speaks lowly, only just loud enough for the microphones to pick it up. "You wanted to come just from that, didn't you baby? So fucking greedy, you are. Who's gonna get to come first here, Harry?"
"You, Louis, you," Harry cries.
"That's right, love. Me. Gonna fuck you now," Louis declares. He drags his hand down to slap Harry's cheeks lightly. He watches the pretty pale skin shake after each smack, watches the redness slowly rise to the surface. "Pretty little arse, Harry. Such a lovely boy."
He puts a condom on and slicks himself up with lube from a bottle that was lying on the table. Without much warning, Louis presses the head of his cock against Harry's rim and sinks himself in deep.
Harry lets out a noisy wail as he's assaulted with dueling waves of pleasure and pain. Louis doesn't give him much time to adjust, withdrawing and thrusting back in almost immediately. Harry scrambles for purchase on the sheets beneath him as he's jerked forward with every motion.
Wanting to keep Harry controlled, Louis presses Harry's face into the mattress and jerks his arms back behind his back, keeping them clasped together with both of his hands. He uses this for leverage as he pounds into Harry from behind.
"God, Harry, you're so bloody tight," Louis moans. Harry clenches himself around Louis in response, momentarily disrupting Louis' deliberate rhythm.
"Little minx," Louis hisses. Harry didn't think it was possible, but Louis' strokes become even faster than before. He's jabbing right at his prostate with every other thrust it seems, and Harry finds himself wailing with every plunge. He's startled to feel wetness on the sheets beneath him, soon realizing that it's coming from his eyes. He can feel his orgasm building within him, not even shocked that he's so close to coming. Usually he has to stroke himself to keep him in the mood while some untalented brute fucks him, but the combination of Louis' scent, Louis' cock, Louis' dominance, and just Louis is making him go haywire. He's about to warn Louis that he's going to come, when Louis pulls out abruptly. Harry gasps and turns to stare at Louis and plead for him to continue.
Louis just shakes his head and grins. He lies back against the pillows and pumps his cock, watching Harry. "Ride me," he orders.
Harry's eager to comply, shifting on wobbly knees to line himself up over Louis' cock. He holds his cheeks apart as he sinks down until he's fully seated, nestled against Louis' hips. He brings his hands forward to brace himself against Louis' chest and begins to rise and drop with the rhythm of his own sharp breaths.
"Fuck, Harry. Taking it so well. You were born for this, weren't you? Born to fuck yourself on my cock," Louis croons.
Harry nods repeatedly in agreement, "Yeah, yeah, want it so bad. Need it."
Louis secures Harry's hips into his hands and begins to thrust up at each of Harry's downward strokes. Harry sobs as each thrust places the head of Louis' cock on or around the spot inside him that drives him mad with pleasure.
Louis brings a hand up to pinch one of Harry's puffy nipples in between two of his fingers. He pulls and twists until it's swollen and Harry's letting out dainty little whimpers. He switches to the other nipple and then sits up to take it into his mouth. Harry wraps his arms around Louis' back as he suckles at the pretty pink nub in between his teeth.
Harry's nearly about to combust at the warring sensations hitting him when Louis knocks him back onto his back and begins to pound into him harshly. He runs his fingers through Harry's hair and yanks hard as he lets out a loud groan. Louis pulls out and Harry scrambles to try and drag him back. Louis ignores him and rips off his condom, jerking his cock over the pink-hued skin of Harry's thighs. He comes with a shout, spilling white spurts onto Harry's thighs and cock.
Harry scrambles to jerk himself off, close to release himself, but Louis slaps his arms away and leans down, pressing two fingers inside Harry and crooking them so that the pads of his fingers press against his prostate. He takes Harry's cock into his mouth and sucks around the head until Harry comes in his mouth.
Louis swallows a little, and lets a bit dribble out of his mouth as he leans up and kisses Harry. Harry keens into Louis' mouth at the taste of himself, licking around Louis' chin to get the rest.
When they're done, Louis rolls onto his back beside Harry and runs his hands through his sweaty fringe.
"Cut!" John calls out, startling Harry from his trance. He forgot they were even filming.
"Excellent job, boys," he calls out and the crew swarms into frame to start cleaning up.

***
"Seems as if you're a natural, Louis," Harry admits later as they relax on the couch in the dressing room, still catching their breaths.
Louis smiles over at him, eyes crinkling fondly at the corners. "Think I just had a nice partner, babe."