Welcome to my first attempt at writing fictional erotica.
I am keen to receive constructive criticism but please remember that this is a work of fiction and the characters are not real. Don't hold back, I have very thick skin!
This story was drafted on an iPhone 11 in British English with final editing in MS Word by myself, so blame me for any spelling, grammar, or continuity errors.
Finally, I would like to thank J267 and JennyGently for their inspirational work which enthused me to try writing myself.
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It was a glorious sunny day that started happily enough travelling with my wife and baby daughter, Alice, to visit my wife's parents at their home for the weekend.
My wife's younger sister, Cheryl, was also visiting after breaking up with her fiancé following a long engagement.
We had lunch at my in-law's home like any middle-class family in middle England. Fifteen-month-old Alice was the centre of attention bringing happiness and delight to her doting grandparents and aunt who fussed around her as she sat in her high-chair.
On that fateful day my wife and her mother went shopping in the afternoon, promising to return at teatime. My wife's father left to play golf with friends.
That left me alone in the family home with Cheryl looking after Alice who was asleep in the nursery upstairs.
Cheryl had innocently flirted with me since we first met without anything untoward happening. But today was different. Today she was depressed and on the rebound from her fiancé.
It was a terrible error on my part to be left alone with this gorgeous nubile fragile young woman.
We stood in the nursery admiring my cherubic sleeping daughter when Cheryl started sobbing. She reached out and squeezed my hand.
"I'm sorry. You're so lucky. Alice reminds me of what I've lost".
She turned and hugged me, burying her head in my shoulder.
I hugged her tightly, enveloping her in my arms. Her warm soft breasts squeezed against my chest. My pulse started racing in sync with her heartbeat.
Then she kissed me.
An innocent sweet kiss on the cheek. Another hug.
Then a less innocent kiss on my lips. Another tighter hug.
Then a long lingering tongue probing horny kiss.
I couldn't help myself. I responded with passion and lust. My cock hardened at feeling the warm soft feminine body of this beautiful 25-year-old woman.
The fuse was lit on the bomb that was about to detonate under my marriage.
It was like jumping off a cliff. There was no going back.
We quickly escalated to touching then groping. I ran my hands down her back to her buttocks feeling her gorgeous soft female arse. My hands dived under her skirt feeling her soft warm bum cheeks covered in tights then into the tights and panties to feel her naked skin underneath. My hands roamed her body at will and unhindered.
Cheryl's hand found my hard cock bulging my trousers.
In a frenzy we stripped each other's clothes off in the nursery then Cheryl pulled me to her bedroom naked.
It all happened so quickly. Time stopped.
We writhed on the bed frantically exploring and pleasuring each other's naked bodies. It was as if we knew that this fleeting opportunity to fuck would never happen again. When she was ready, I dragged Cheryl to the edge of the bed and flipped her over onto her knees and elbows with her arse raised high, her legs splayed lewdly, facing the open bedroom door. She was on heat, begging to be fucked. Hard.
Standing beside the bed in just my socks, I ran the fat head of my cock along the length of Cheryl's soaking slit to check her readiness for mating. She gasped. Her clit was engorged, and her cunt sodden. In one push I mounted her bareback until I was balls deep in her cunt. She screamed.
Firmly holding Cheryl's broad hips, ripe for childbearing, I started slowly, building up the cadence of our mating until I was riding her hard, pounding my cock in and out of her warm sopping wet cunt. On the out-stroke her inner pussy lips gripped my cock as if by suction. She was loving it, whining "don't stop, harder". My cadence increased, slap-slap-slap-slap-slap-slap as I pounded into her hard. The room reeked of the smell of Cheryl's seeping drenched slit. Her fists gripped the sheets as her excitement built ever higher towards release. The sounds of fucking filled the house.
We didn't expect anyone home for another hour but with the creaking of the bed, Cheryl's loud panting and whining, the slap-slap-slap-slap of my loins pounding her soft buttocks, and me grunting and shouting provocative sex talk like "your cunt is sooo fucking wet" we didn't hear the front door open, the footsteps on the stairs, or my wife and her mother appear in the open bedroom door, just at the moment I roared and emptied my balls into Cheryl's sweet welcoming fertile womb.
We froze, caught 'in flagrante delicto'.
My wife screamed and lunged at me like a banshee punching scratching and screaming "you fucking cheating bastard, get off the fucking whore".
I pulled my cock out of Cheryl's swollen pussy just as a final spurt of semen shot towards my mother-in-law landing on Cheryl's engorged, and well fucked, slit.
My wife punched and kicked me with a ferocious anger that I had never seen before, narrowly missing my precious balls.
Cheryl jumped up naked screaming "it's not what it seems". I thought "oh yes, it is" as a gob of my viscous semen hung between her legs. She rushed naked to the nursery to get her clothes with my semen dribbling down her inner thigh as damning evidence of my infidelity.
Our baby daughter, Alice, started screaming, pouring yet more petrol onto the mayhem.
Somehow, I managed to gather my trousers under a rain of blows screams and curses from my wife.