James watched as his shaft slid in to Kim’s bald pussy. She felt tight around his cock and penetrating her almost made him cum. Kim lie naked on her back underneath him with her hands pulling her fit legs apart for him. Her torso glistened in sweat like when he used to stare at her as she changed her jersey after a soccer game. Her small nipples on her perky tits were erect, her entire body heaved as she worked tirelessly to keep quiet to avoid waking her sister, James’ wife Sara up. Or her parents for that matter.
On his knees between her legs, James felt the sack of his testicles rub against Kim’s labia. He was fully in. He had wanted to fuck her bareback but common sense ruled and he wrapped his cock in a ribbed Trojan. He did not want to explain to Sara why Kim’s bastard son looked just like James. He was living dangerously at the moment but not that dangerously.
As the brother and sister-in-law’s pieces slid in to place, a sense of urgency struck them both. James wanted to savor Kim’s sensual 19-year old body but knew he couldn’t waste time. He pulled Kim into his lap and she pulled his head in between her tits, flexing her tight abs and arms, preparing for James’ thrust. He did not let her wait long- he pulled her shoulders down, pushing his cock in further and thrust up from his ass to maneuver his dick around in her pussy. She starting letting out short high pitched pants telling him to go harder. With the rubber on he could go hard all night.
They got into a rhythm- Kim rolled her ass up, releasing the clench she had on James’ dick as he reversed to thrust into her again. When he was penetrating her deeper, she let his muscular arms pull her hips down against his thighs, like gravity pulling a ball back to the ground after it had been thrown into the air. When he thrust the wet sound of her pussy taking his cock seemed to encourage him.
After a few minutes of hard fucking, James whispered , “I’m about to cum”, “yeah? I want you to” she whispered back sensually.
He felt the explosion in his upper thighs all the way to the tip of his cock. A volcanic blast of semen filled the condom, his shaft pulsing and convulsing with each new string of cum ejaculating from his body. Each flexing of his cock as he came and the warm of his semen made Kim want to come again.
“Keep going I’m almost there” she said, pushing his torso against the couch. She pulled enough of him out to partially stand with her knees bent and began to maneuver her pelvis up and down, letting his cock brush against her clit. She was so wet that it hardly felt like he was still inside her, but she knew he was because his breathing began to accelerate with hers and she could feel his shaft touching her clit. She held her breath and went faster, forcing all her energy and sensation between her legs until at last her legs shook and she sat back down on his lap, shaking, muffled moans crying out into his neck. She lay naked against his chest, their sweat intermingling, his cock going limp and falling out of her pussy. They embraced, heaving for what seemed an eternity. Each touch from one another electrifying as there bodies filled with endorphins.
Source: reddit.com/r/sexystories/comments/5sqwy1/forbidden_lustinlaw_pt_2_mf