Sweat-Stained Silk

"God, Mia, if you don't stop squirming like that I'm going to drop my charcoal again."

Lila's voice came out rougher than she meant, echoing off the empty gym walls. The place smelled of rubber mats and fading sweat, the overhead lights already half-dimmed for closing. Mia stood on the weight bench in nothing but a tiny sports bra and a pair of pale pink panties that clung to her like a second skin, damp from her earlier workout. The artist had been sketching her for twenty minutes, but the ache between Lila's thighs had started the second Mia peeled off her leggings.

Mia smirked, shifting her hips so the fabric pulled tighter across her mound. "Maybe I like making you squirm, artist girl. You said you wanted real tension in the pose."

Lila set the sketchpad aside with a soft clatter. The gym was deserted; the last staff member had waved goodbye five minutes ago and locked the front doors from the outside, leaving them alone with the low hum of the air conditioning. Heat crawled up Lila's neck as she crossed the mat, her own loose tank top suddenly too warm against her skin.

She reached out and hooked a finger under the waistband of those panties, tugging lightly. "These... these are the real subject tonight. The way they cut into you right here." Her fingertip traced the elastic where it dug into Mia's hip, then slid lower, pressing the damp silk against the model's swollen lips.

Mia's breath hitched. "Then stop drawing and fucking touch me already."

Lila didn't need telling twice. She shoved the model backward onto the bench, the cool vinyl squeaking under them. With bold hands she yanked Mia's sports bra up and over her head, buttons on the side strap popping open with a satisfying snap. The fabric caught briefly on one nipple before Lila freed it, tossing the bra aside. Mia's tits bounced free, nipples already tight and dark.

"Look at you, soaked through these pretty panties," Lila murmured, dropping to her knees between Mia's spread thighs. She rubbed her palm firmly over the silk-covered pussy, feeling the heat and slickness seep through. Mia moaned, hips jerking up.

"Take them off... or don't. Just don't stop."

Lila grinned wickedly and instead hooked the crotch of the panties to one side, exposing Mia's glistening, shaved pussy. The pink lips parted, clit peeking out swollen and shiny. Lila leaned in and licked a slow, broad stripe up the center, tasting salt and sweet arousal mixed with the faint laundry scent of the silk still brushing her cheek.

"Fuck, yes," Mia gasped, one hand flying to Lila's hair. "Your tongue feels so good on my clit... suck it a little."

Lila obliged, wrapping her lips around the sensitive nub and sucking gently while two fingers pushed inside Mia's tight channel. The wet sounds filled the quiet gym, obscene and loud. She pumped steadily, curling her fingers against that spongy spot that made Mia's thighs tremble.

Mia was grinding against her face now, panties stretched taut around one ass cheek. "Harder, Lila... I'm close already. Don't you dare slow down."

Lila added a third finger, stretching her model open while her tongue flicked fast over the clit. The bench creaked as Mia's back arched, tits jiggling with every thrust. Sweat beaded between her breasts, trickling down to where the bunched panties rubbed her skin raw in the best way.

Suddenly Lila pulled back, fingers slipping free with a wet pop. Mia whined at the loss, but Lila was already standing, shoving her own shorts and underwear down in one impatient motion. Her cock sprang free, thick and veined, the head flushed dark with need. Mia's eyes widened with fresh hunger.

"Wait... you're... oh shit, that's hot."

"Turn over," Lila ordered, voice low and pushy. She spun Mia on the bench so the model was bent over it, ass up, those pink panties still caught crookedly to the side. The sight of the silk framing Mia's juicy ass and dripping pussy made Lila's cock throb.

She gripped Mia's hips and pushed inside in one smooth stroke, burying herself balls-deep in the tight, silky heat. Both women groaned. Lila started thrusting hard, the wet slap of skin on skin echoing. Each push made the panties rub against her shaft on every out-stroke, the friction driving her wild.

"Feel that? Your dirty little panties are stroking my cock while I fuck you," Lila panted, reaching around to pinch Mia's clit through the stretched silk.

Mia cried out, pushing back to meet every thrust. "Yes... pound my pussy. Use me. I'm gonna come all over your dick."

Lila fucked her faster, one hand tangling in Mia's ponytail, pulling just enough to arch her back. The bench rocked beneath them. Mia's inner walls started fluttering, squeezing tight around the thick cock.

"Come for me," Lila growled, spanking the model's ass once, twice. The sharp smack left a faint red print on the pale skin above the panty line.

Mia shattered with a broken moan, pussy gushing around Lila's cock, juices soaking the pink silk until it clung translucent. Lila kept pounding through the spasms, chasing her own release.

Just as the first hot spurts of cum started flooding Mia's pussy, the overhead lights flickered once in warning, the gym's closing timer kicking in.

Lila laughed breathlessly against Mia's sweaty back, still buried deep, cum leaking around her shaft and staining the panties darker.

"This isn't over," she whispered, nipping Mia's ear. "We're taking these soaked panties home with us... and I'm not done with you tonight."