EROTICA • AGE GAP • VOYEURISM

My Wife Caught Me With Her Younger Sister

She just stood there watching us.

A few months had passed since I made a sex movie with my wife’s younger sister. It all started when she jerked me off over her panties one night. It escalated to the point where I was in one of her roleplay sex movies.

“I can’t believe your sister is still living with us,” I said, pouring the last bit of wine into my wife’s glass.

“It’s only been two months. Plus, she has a job now. So, she’s contributing,” Jade said.

My sister-in-law, Katie, came over one day after a bad breakup and never left. We had two intense sexual encounters, but I managed to stay away from her for the last few weeks.

“I noticed you haven’t been talking to Katie as much?” Jade said, downing the last of her wine.

“Well, she’s been at work a lot, and life is busy,” I said.

I didn’t tell my wife that on several occasions, I’d crept into the bathroom and took one of Katie’s used panties. I felt like some sort of pervert, but I couldn’t resist. I’d lick her gusset before wrapping it around my bulging cock for a quick masturbation session. Usually, I’d cum all over it and throw it away.

“Sis, your washing machine is seriously eating all my underwear,” Katie said, sauntering into our dimly lit lounge.

My heart skipped a beat. She wore her tiny crop top and shorts. Pyjamas, my wife had bought her a few weeks prior. I tried to look away, pretending not to notice how her nipples created little bumps under the thin material.

“Are you sure you’re not leaving them at a boyfriend’s house?” Jade chuckled.

“I wish,” Katie said.

A pang of jealousy hit me.

“I’ll take you to the store this weekend to buy more. In fact, Andrew can take you. He’s going in that direction anyway,” Jade said.

“Have this old man take me to buy panties? Ew,” Katie said. “I’ll go by myself, thanks.”

A stab right in my chest.

“I’ll have you know your brother-in-law is hot stuff,” Jade mocked, slapping my lap.

Fuck. She felt my raging erection.

“I don’t want to know more. Bye,” Katie said, leaving the room.

Her ass cheeks stuck out the bottom of her shorts. I could feel my heart racing. Was Jade going to mention my erection?

“I think I’m going to head up to bed,” she said.

Relief.

“I’ll turn off the lights,” I said.

“Check on Katie. She’s been off the last few days. Maybe you can get something out of her,” Jade said.

“Sure,” I said.

I didn’t want to get up yet. Jade leaned down and kissed me before jogging upstairs. I stood up and pushed my shorts down, before walking to Katie’s room.

“Katie?” I said.

“Oh, now you want to talk to me?” she said.

“What do you mean?” I said.

“You’ve been avoiding me, Andrew, ever since we made the video,” she said. “And that really hurt me.”

“Well, you called me ‘ew’,” I said.

“I know you’ve been stealing my dirty panties, Andrew.”

One or two would have been fine. But I probably took close to a dozen in the last few months. I tried to change the subject.

“Jade says you’ve not been yourself lately?” I said.

“Yeah, felt a little funny the last while. But it’s probably because you’ve been so mean to me,” she said.

“I’m sorry, Katie. I didn’t mean to be dismissive. It’s just been weird since, you know, we had sex,” I whispered.

“You can always make it up to me?” she said, circling her finger around her nipple.

She squeezed her bud through her top, biting down on her bottom lip.

“Little sis can give you what big sis isn’t,” she purred, looking at my shorts.

“We’re not doing this, remember?” I said.

“Don’t you want to taste my pussy, Andrew? Instead of licking the wetness from my worn panties?” she said.

Katie spread her legs wide. The bottom of her tiny shorts gaped by her legs. She wasn’t wearing any underwear.

“Am I your good little whore?” she asked.

My cock was throbbing inside my shorts. Longing to squeeze back into her tight, youthful cunt. Feel her contractions milking my cum deep into her fertile womb.

“You are,” I said.

I climbed onto the bed.

“You lie down,” she said, pushing me onto my back.

I stared at the door.

“We should close it,” I whispered.

“Jade is passed out. You fed her enough wine,” she said.

“Hey, I didn’t,” I started.

Katie shoved two fingers into my mouth.

“Taste my cunny, Andrew,” she said.

I yanked my shorts down, allowing Katie to marvel at my thick, long shaft.

“Looks like it’s been a while,” she smiled.

Katie pulled her top off. My hands shot to her chest, groping her perky tits and hard nipples. She lifted her pelvis over my veiny cock. Katie pulled her flimsy shorts aside and lowered her wet, engorged pussy over my tip.

“Ah, fuck,” I gasped.

Her petite body lowered onto mine as my length burrowed deep into her gripping canal. Katie winced as I stretched her wide.

“You feel so big, Andrew,” she whispered.

Suddenly, I noticed movement at the door. My blood went cold.

Jade stood there. Watching us.

“Katie,” I said, trying to push her off.

“Fuck me, Andrew,” she whined.

She gripped my chest and started bouncing her lithe body on my cock.

Flop! Flop! Flop!

“Uh, uh, uh!” Katie whimpered.

My wife continued staring, watching her younger sister riding my pulsating cock like it was hers. The shock would usually have made me flaccid, but it felt like my cock grew even harder.

“Uh, Andrew, put a baby in me,” she said.

“Katie, fuck,” I said.

The next moment Katie cried out. Her body trembled on mine as her pussy gripped my cock.

“Fill me with your cum,” she gasped.

I glanced at Jade. She was still staring.

“Argh!” I grunted.

The next moment I exploded, flooding my sister-in-law with reams of creamy seed. Katie jumped off my cock, grabbed my shaft and jerked me off furiously. She smiled as the last of my shots hit her chest. Katie smiled as my cum ran down her flushed tits.

“What the hell was that?” I panted.

“Something I always wanted to try, since you always have so much cum,” she said.

Jade was no longer standing there.

“Katie, Jade was watching us,” I said.

As my climax subsided, the shock started setting in.

“You’re imagining it,” Katie said, looking back at the door.

I pulled my shorts back up. At that moment, I was too scared to return to my bedroom.

🥵 The first two times my wife’s younger sister seduced me: