EROTICA • VOYEURISM

I Spied on My Wife’s Younger Sister

She left the door open while playing with herself.

“Is she okay?” I asked, sipping my coffee.

“She will be. I never liked that asshole anyway,” my wife, Jade, responded.

My wife’s sister, Katie, came to crash at our house after a massive argument with her college boyfriend.

“Is she staying the night?” I asked.

It was already past midnight.

“I told her the guest room was hers for as long as she wanted. She doesn’t want to go back to their shared apartment,” Jade said.

“I’m going back to bed,” she said, getting up.

I grabbed her ass through her tiny sleep shorts.

“Should we finish what we started?” I smiled.

Katie had interrupted our fucking when she came over earlier. And I was still aching to finish inside my wife.

“Not with Katie here,” she smiled, walking back upstairs.

I stared at my wife’s ass. My cock was still rock-hard in my boxers.

“Please!” I whispered.

No response.

I turned off the lights and noticed the downstairs guest bedroom door was open.

“I’ll check that Katie has what she needs,” I thought.

I approached her door and immediately hid.

“Fuck,” I mumbled.

She was busy getting dressed. I didn’t want it to be awkward. Should I go back upstairs? Wait a few minutes until she’s done? I peeked around the corner again.

My heart raced as I watched her. Katie unclipped her bra and dropped it to the floor, before sliding her panties down her smooth legs.

I wanted to look away, but my raging erection was driving the bus. I stared at my wife’s younger sister as she bent over to snatch clothes from her bag.

“Fuck,” I thought, getting a perfect view of her ass and pussy from behind.

I watched, mesmerized, as she slipped into a tiny pair of cheeky cotton panties that barely covered her bum. Katie then jumped into the bed and kicked the covers off. She lay back, her tits jiggling on her petite body. Katie parted her legs a little.

I could feel my cock throbbing. I watched as she ran her hand over her panties, teasing her pussy with two fingers. Her other hand darted to her tits, groping one as she used her thumb to rub her nipple.

“Hmmm,” she moaned, arching her back.

I wasn’t sure if I was in a dream or not. Katie whimpered while she gave her swollen mound a few light pats. I slid my hand into my boxers and gripped my pulsating length.

“Ah,” she whined, rubbing her panties more vigorously.

Katie yanked her panties to her feet and spread her legs wide. Her smooth cunt lips were thick and wet, her labia protruding from her folds. I watched as she circled her finger around her nub, moaning louder with each passing second.

“Uh, uh, uh!” she whined, thrusting her hips in the air.

I jerked off, watching my wife’s sister fingering herself on the bed.

“Fuck, that’s so good,” she whispered.

She had two fingers in her pussy. Katie fingered herself harder. Her palm slapped against her messy mound.

Flap! Flap! Flap!

“Argh, fuck,” she groaned.

She pulled her knees up to her chest as her body writhed and shook. Katie whined and groaned as she climaxed in front of me. I jerked myself off faster.

“I have to stop,” I said to myself.

“Ah,” Katie smiled as her spasms stopped.

She opened her legs again, her ragged breathing filling the room.

“Come tuck me in,” she called.

My blood went cold. Was she talking to herself?

“I know you’re there, Andrew,” she said.

Fuck!

“Come kiss me goodnight,” she continued.

I took my hand out of my boxers.

“Uh, goodnight,” I said from the doorway, trying to hide my erection.

“What kind of goodnight is that?” she said.

I walked to the bed, trying to look away. Her nipples were rock-hard, and the smell of her orgasm filled the room.

“You didn’t even finish?” she said, staring at my boxers.

She smiled as she tugged my boxers down.

“Fuck, Katie,” I exclaimed.

She tugged on my cock, looking me in the eyes.

“Can’t have you going to bed all backed up,” she whispered.

“Uhmm,” I moaned as my wife’s sister jerked me off.

She reached for her panties. Her gusset was still sticky. Katie continued stroking my cock, feeling the veins bulging around my shaft.

“I’m close,” I said through gritted teeth.

Katie folded the panties over her hand and rubbed the wet gusset against my tip.

“Argh,” I grunted.

I watched as she aimed my cock towards the panties in her hand. Spurt after spurt of hot seed shot out onto her underwear. My cock pulsated as she emptied my balls into her panties.

“Fuck,” I mumbled as she released my length.

She winked at me as she slipped the cum-filled panties back on.

“What the fuck?” I said.

“I want to sleep with my pussy bathing in your cum,” she said.

“Isn’t that a bad idea?” I asked.

“Isn’t your sister-in-law jerking you off a bad idea, too?” she quipped.

“Let’s forget what happened here,” I said.

After my climax, things looked a lot less rosy.

“Don’t worry, I won’t be staying long,” she said.

I felt relief. I’d be able to manage the awkwardness for a day or two. And then she’ll be gone.

“Yeah? How long? Day or two?” I said.

Her response sent a chill down my spine.

“A couple of months max.”

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