my gf’s sister [F19] spends the night with my gf and I – Short Sex Story

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Riley and I have been living together a good few months and her sister decides to come visit.

We just had her get the abortion we needed, so Claire hadn’t been in a mood in a while. As we were all chilling out and drinking, Claire gets up and goes to use the restroom.

All of a sudden I get a text from Claire, a photo. She stole Riley’s remote control vibrator and had it in her pussy with the caption: “you better make me cum, or else”

A moment later the app for the vibrator connects. Claire walks out of the bathroom and sits down. I immediately turn on the toy and watch her face go white as she shifts around trying to distract from it. I kept going for a while till Riley said we should watch a movie. In agreement we watched a horror movie. I set the vibrator to listen to sound and every jump scare and music cue sent shivers through her. Eventually she went back to the bathroom after I could see her soaking her grey leggings.

I get a text: “make me cum, please… I’m literally aching”. I turn the toy up and minutes later I get a video of her cumming in my bathroom, using her panties to mask her moans.

She comes out in fresh clothes and sits in front of me. Riley is none the wiser.

Riley gets up. “God Claire, I’ve had to hold it for so long!” Riley says as she locks the bathroom door.

Claire immediately drops her pants and grabs my hand. Her pussy is still soaking wet. She rips my pants off and straddles me on the couch. She takes my hard cock in all at once and starts fucking me slow. She’s so unbelievably tight and wet that I feel like I could burst already.

“Claire, what about the condoms?” I whisper out in moans.

“Don’t worry, you’re not going to finish, now are you?” She smirks and fucks me harder. Soon her tits are out and I wanna cum so badly. The more she took off, the closer I came to filling her with a week’s worth of cum. I could feel myself nearly ready to burst when we heard the toilet flush. Claire jumped off and got dressed in seconds. I barely had my pants up when Riley opened the door.

We sat far from each other the rest of the night. Eventually we all got tired and Claire wanted to sleep with Riley. Not wanting to get between sisters I slept on the futon.

I couldn’t sleep. The futon hurt my back and Claire was on my mind the whole time. The clock struck 3am and I heard the bedroom door open. Claire walks out in just underwear.

She doesn’t say a word as she straddles me and starts to grind. I’m hard in seconds and within a minute she’s under the covers and filled with my cock. She lays down and our chests meet as our lips do too. She fucks me for what felt like an hour as I did everything imaginable not to cum in her.

Finally I felt myself give in as she started to speed up. I didn’t say anything because I opened my mouth and she covered it. She could see my eyes get wide and she leans to my ear.

“You’re not going to cum in me, are you? We know what happened last time.” In a flirty, sarcastic voice. I try to speak under her hand but she keeps going and tells me “I bet you wanna cum, yeah?”

I nod.

“Now be honest, do you wanna cum in me?”

I nod again with a bit of shame knowing we shouldn’t. She leans in, holds still, and whispers faintly.

“Then fill me.”

And like a dog on command, my load exploded in her pussy. She rode me till I came at least 3 more times. She collapsed on me and looked into my eyes.

“I think I want to keep this one.” She smiles and pulls me out. Before any cum could fall she plugged her pussy, got dressed, and left me.

I laid there covered in pussy juice and my mind racing if she got pregnant again.

I waited anxiously for a month to hear if she had her period. Claire sent me a picture of bloody panties with a thumbs down 2 days late in her cycle.

I want to breed her so badly, but the implications…

NSFW: yes

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