Wife's Best Friend Begs for My Secret Thrusts

Mark had always known Lisa was trouble. Sarah's best friend since college, she was the wild one—the girl who turned every girls' night into a booze-fueled confessional. With Sarah away on her week-long work conference in Chicago, Lisa had begged to crash at their place for the weekend. "I hate being alone in my shitty apartment," she'd whined over the phone, her voice dripping with that playful lilt that made Mark's cock twitch despite himself. Sarah, ever the loyal wife, had insisted: "She's family, babe. Be nice to her."

Nice. Right. Lisa showed up Friday evening with a duffel bag and a bottle of tequila, her tight yoga pants hugging an ass that could make a priest sin. She hugged Mark too long at the door, her full tits pressing into his chest, nipples hard little points through her thin tank top. "Missed you, big guy," she purred, pulling back with a wink. Sarah waved goodbye from the airport shuttle that morning, oblivious.

That first night, they ordered pizza and cracked open the tequila. Lisa lounged on the couch in a cropped tee and shorts so tiny they rode up her thighs, flashing the edges of her lacy thong. She laughed at Mark's dumb jokes, touching his arm, her fingers lingering. "Sarah's so lucky," she said, biting her lip. "You two fuck like rabbits. I hear everything through those thin walls when I crash here."

Mark choked on his beer. "What?"

She grinned, leaning in, her breath hot with liquor. "Don't play dumb. Last time I stayed over, after that barbecue? I was in the guest room, finger-fucking my pussy to the sound of you railing her. Those secret thrusts of yours—god, the way you grunt and slam deep. I came so hard imagining it was me."

His cock stiffened instantly, betraying him. He shifted on the couch, but Lisa noticed, her eyes dropping to the bulge in his jeans. "See? You like me knowing your dirty little secret."

Saturday morning, Mark woke with morning wood, Sarah's side of the bed empty and cold. He jerked off in the shower, picturing Lisa's ass, hating himself for it. Downstairs, she was already up, wearing nothing but a skimpy silk robe that barely tied at her waist. The fabric gaped open as she bent over the coffee maker, revealing pert C-cup tits with rock-hard pink nipples and a shaved pussy peeking from between smooth thighs. No panties. No bra. Just pure fucking temptation.

"Morning, handsome," she said, turning with two mugs, her robe slipping off one shoulder. "Sleep well? Dream of pounding my tight little hole?"

"Lisa, what the fuck?" Mark growled, but his eyes devoured her. She sauntered over, hips swaying, and handed him the coffee, brushing her bare tits against his arm.

"I've had a crush on you forever, Mark. Sarah's my bestie, but you're the one I fantasize about. Those secret thrusts—I want them. In me. Betraying her with me." She untied the robe fully, letting it pool at her feet. Naked, flawless—toned legs, flat stomach, a juicy ass begging to be grabbed. Her pussy lips glistened already.

He backed up against the counter, cock throbbing painfully in his boxers. "This is crazy. Sarah—"

"Is gone." Lisa closed the distance, her hand sliding down his chest to palm his bulge. "And I'm here, dripping for you. Feel how wet?" She grabbed his hand, forcing it between her thighs. Her cunt was soaked, hot folds parting under his fingers. She moaned, grinding against him. "Fuck me like you fuck her. Those powerful thrusts I've heard. Make me your cheating slut."

Tension crackled like lightning. Mark's resolve crumbled as she dropped to her knees right there in the kitchen, yanking down his boxers. His thick eight-inch cock sprang free, veiny and leaking pre-cum. "Holy shit," she whispered, eyes wide with hunger. "Sarah wasn't kidding about this monster."

Before he could protest, Lisa swallowed him whole. Her mouth was a wet vacuum—lips stretching around his girth, tongue swirling the underside as she deepthroated him in one filthy plunge. Gagging wetly, she bobbed, slurping noisily, drool spilling down her chin onto her tits. "Mmmph, fuck my throat," she gasped, popping off to stroke him slickly. "Betray your wife with me, Mark. Feed me this cock, then wreck my tight pussy. I've wanted it so bad—your secret thrusts stretching me while Sarah's clueless."