His Best Friend's Little Sister

Jake’s truck rumbled to a stop in the gravel driveway just after sunset. The lake house was dark except for the single porch light Mike had left on for him. He killed the engine, grabbed his duffel, and let himself in with the key hidden under the ceramic frog by the door. The place smelled like pine, sunscreen, and old wood—just the way he remembered it from a dozen summers spent here with Mike.

He was looking forward to three quiet days of fishing, beer, and not thinking about the transmission shop. Mike was in Chicago for his cousin’s wedding and wouldn’t be back until Monday. Jake had the whole house to himself.

Or so he thought.

He’d just cracked his first beer and stepped onto the back deck when he heard the sliding door behind him. Bare feet padded across the cedar planks. A soft, amused voice cut through the dusk.

“Well, well. If it isn’t Jake the Snake.”

He turned and nearly dropped the bottle.

Riley stood in the doorway wearing nothing but a faded gray tank top that barely reached the tops of her thighs and a pair of tiny black shorts that clung to her like they’d been painted on. Her dark hair was twisted up in a messy knot, a few loose strands framing her face. At nineteen she was all smooth golden skin, long legs, and attitude. The last time he’d seen her she’d been a gangly sixteen-year-old with braces. That girl was gone. This one looked like she knew exactly what she was doing to him.

“Riley,” he said, voice rougher than he wanted. “Mike didn’t say you’d be here.”

She smirked, stepping closer. The tank top shifted and he caught the faint outline of her nipples through the thin fabric. “Mike doesn’t know everything. I finished finals early. Decided to come up and… unwind.” Her gaze dragged slowly down his chest, over the grease-stained T-shirt he hadn’t bothered changing out of, then lower. “Didn’t expect to find you here playing house-sitter.”

Jake took a long pull from his beer, trying to ignore the sudden heat pooling low in his gut. “I’m just crashing. I’ll stay out of your way.”

Her laugh was low and throaty. “That’s cute. You think you can ignore me all weekend, Jake?” She turned and walked back inside, hips rolling with every step. The tiny shorts rode up, revealing the soft undercurve of her ass. “Good luck with that.”

He spent the next two hours telling himself he wasn’t going to look.

It didn’t work.

They ended up on the dock like old times, cooler between them, feet dangling over the dark water. Stars prickled overhead. Riley had thrown on a hoodie but kept the tiny shorts. Every time she shifted, the fabric pulled tight across her thighs. Jake drank faster than he should have, trying to drown the growing ache in his cock.

They traded stories—mostly the stupid shit he and Mike had done when they were younger. Riley listened with her chin on her knee, eyes bright. Then the conversation turned.

“You know,” she said quietly, “I used to watch you. Back when I was just Mike’s annoying little stepsister. You’d come over covered in motor oil and I’d hide in the hallway just to listen to you laugh.”

Jake’s stomach tightened. “Riley…”

“I had such a crush on you it was pathetic.” She tilted her head, studying him. “Still do, actually. And I’ve seen the way you’ve been staring at my ass tonight, Jake. Don’t even try to deny it.”

The raw honesty in her voice snapped something inside him.

He set the beer down hard. “You don’t know what you’re asking for.”

She stood up, stepped over the cooler, and straddled his lap in one smooth motion. Her hands slid into his hair as she looked down at him, lips parted.

“I’m not asking,” she whispered. “I’m telling you I want you to fuck me.”

The last thread of restraint tore.

Jake surged up, mouth crashing into hers. Riley moaned into the kiss, grinding down on the thick ridge of his cock through his jeans. Her tongue was bold, teasing, tasting like beer and mint. He gripped her ass with both hands—finally, finally—and squeezed the firm flesh he’d been trying not to stare at all night. She rocked against him, rolling her hips in filthy little circles that had him growling into her mouth.

They stumbled off the dock and back into the house, barely separating long enough to breathe. The sliding door banged shut behind them. Jake lifted her onto the kitchen island like she weighed nothing. Riley’s legs wrapped around his waist instantly, ankles locking at the small of his back as she tugged at his shirt.

“Off,” she demanded. “I want to feel you.”

He yanked the shirt over his head. Her hands roamed over his chest, nails scraping down the hard ridges of muscle earned from years of wrenching on engines. She leaned in and bit his collarbone, hard enough to sting. Jake hissed, fisting her messy bun and pulling her head back so he could devour her mouth again.

They were both breathing hard when he finally broke the kiss.

“You sure you want this?” he rasped, giving her one last out.

Riley’s eyes were dark, pupils blown wide. She reached between them and palmed his cock through his jeans, squeezing the thick length.

“I’ve wanted this since I was old enough to know what this was,” she said. “Don’t you dare stop now, Jake.”

That was all he needed.

He spun her around on the counter, bending her forward over the cool granite island. Riley gasped, bracing her hands flat as he hooked his fingers into the waistband of those tiny shorts and ripped them down her legs along with her panties. Her ass was perfect—round, smooth, and flushed pink. He kicked her feet apart, spreading her wide.

“Fuck, look at you,” he muttered, running a rough palm up the back of her thigh. Her pussy was already glistening, lips swollen and slick. He dragged two fingers through her folds, gathering her wetness, then pushed both inside her without warning.

Riley cried out, back arching. “Yes—God, Jake—”

He pumped his fingers hard and fast, curling them against that spongy spot inside her while his thumb found her clit. She pushed back against his hand, fucking herself on his fingers, moaning his name like a prayer. The wet sounds of her cunt filled the kitchen.

He couldn’t wait another second.

Jake freed his cock, thick and heavy, veins standing out along the shaft. He rubbed the fat head up and down her slit, teasing her clit until she was whimpering, then notched himself at her entrance and drove in with one brutal thrust.

Riley’s scream was pure pleasure. Her tight walls clamped down around him like a fist, hot and silky and so fucking wet. He gave her two seconds to adjust before he started moving—long, deep strokes that slapped his hips against her ass with every thrust.

“Harder,” she gasped, pushing back to meet him. “Fuck me harder, Jake. I can take it.”

He snarled and gave her exactly what she wanted. The island creaked under the force of his thrusts. He gripped her hips hard enough to bruise, pounding into her so deep his balls smacked her clit on every stroke. Riley’s moans turned into sharp, desperate cries. One hand flew back to grab his wrist, nails digging in as she came suddenly, violently—her pussy fluttering and gushing around his cock.

Jake didn’t slow down. He rode her through it, fucking her through the spasms until her legs shook.

Then he pulled out, spun her around, and lifted her onto the counter facing him. He shoved her thighs wide apart, hooked her knees over his elbows, and slid back inside her in one smooth glide. The new angle let him sink even deeper. Riley’s head fell back, mouth open in a silent cry as he started hammering into her again.

“Look at me,” he growled.

Her eyes snapped to his, hazy with lust. She clawed at his shoulders, heels digging into his back as he fucked her with everything he had. The wet slap of skin on skin, her broken moans, the way her tits bounced under the tank top—it was all too much.

“I’m gonna come again,” she panted. “Don’t stop—please don’t stop—”

Jake reached between them and rubbed tight circles over her swollen clit. Riley shattered. Her cunt clamped down on him like a vice, pulsing and milking his cock as she came with a sharp, keening cry. The feeling dragged him over the edge right behind her.

He pulled out at the last second, fisting his glistening cock. Thick ropes of cum splattered across her stomach and the undersides of her tits in heavy pulses. Riley watched with heavy-lidded eyes and a wicked little smile, dragging one finger through the mess and bringing it to her lips.

When the last drop had landed, she sat up, kissed him slow and filthy, tongues sliding together while his cum cooled between them. She pulled back just far enough to whisper against his mouth.

“This is just the first night of the weekend, Jake. I’m nowhere near done with you.”

Then she hopped off the counter, legs still shaky, and sauntered toward the stairs completely naked from the waist down, his cum streaking her skin. She glanced over her shoulder with a smirk that made his spent cock twitch.

“By the way… Mike’s not coming back until Monday. I lied. He’s in Vegas for a bachelor party. We’ve got the whole house to ourselves.”

Jake stared after her, heart hammering, already getting hard again as the full weight of what she’d just said sank in.

He’d just spent the last hour balls-deep in his best friend’s little sister.

And she’d planned the entire fucking thing.