This all started on Thursday morning. I had just arrived at my girlfriend Meghan’s house, I usually just walk right in as I know where their spare key is at. I walked into the house and the first thing I see is her sister Charlotte sitting at the kitchen table in a tight long shirt that spelled the word pink across it. Though her shirt was long, as she was sitting the shirt rested above her knees and i could see her cute black lace thong peaking at me from inbetween her legs. Then Meghan came down stairs.
“Hey baby” Meghan said to me before kissing me. Turned on and sorta getting a semi from seeing her sisters thong I started to make out with Meghan, grabbing her ass and slipping my hands closer to her pussy when..
“Meghan!” Her mom interupted “your gonna be late for class”. We immediately got up and headed out the door.
The following day that I came over it was almost the same thing as the previous day however this time Charlotte was wearing a blue lace thong instead of black, and I could tell she wasn’t wearing a bra because her nipples were poking out really hard.
“Hey Charlotte, is Meghan here?” I asked not being able to look away from her perky tits.
“She’ll be right down, its Friday she always takes longer on Fridays” the words rolled out of her mouth and off her beautiful soft juicy lips, looking into my eyes like there was no one else in the world.
“Yeah that’s true” I struggled to say outloud feeling mesmerized by her beautiful hazel eyes.
“Babe are you here? I need your help” Meghan said softly from the top of the stairs “come here”. I walked up the stairs, took a left turn to her room, walking in on Meghan in her lacy orange bra and pulling up her skinny jeans over her matching orange thong. She turned to me and said never mind, you took too long. She then grabbed me and pushed me onto her bed and crawled over to me on her hands and knees.. as she finally reached me she slowly unzipped my pants and reached her hand under my boxers to pull out my hard dick.
At that moment her mom walked by and knocked on the door.
“Meghan, is Derek here yet? Its, almost 8:00”
“Yes mom, he’s outside!” She yelled out, while staring at my hard, throbbing, fully erected dick that was in her hands, 3 inches away from her face. I had to quickly get up, shove my rock diamond hard dick back in my boxers and pants, and crawl out her window and into the front yard before her mom noticed me. As soon as I got to the front door, Meghan came out and we rushed off to the college.
The next day was Saturday so I was planning on showing up early and we would just hang out at her place all morning. When I arrived I walked right in like always and once again Charlotte was at the kitchen table only this time she wasnt wearing any panties or a thong at all. She had a cute and extremely tight pussy from what I could see, nicely trimmed with a little bit of hair. My dick got so fucking hard and started tenting out in my jeans and there was no way she didnt see the ever growing tent being pitched in my jeans.
“Hey, uhh, is Meghan here?”
“No Derek, its just me today, Meghan went shopping with my mom” she said as she got up from the table and started towards me; as she was about to walk past me I grabbed her by the waste and looked into her eyes and wispered into her ears. At this point my dick was so rock hard it was about to rip through my boxers and then through my jeans.
..”where are your panties today?” I asked her.
“You looked up my shirt?” she said laughing under her words. She then turned towards me, leaned in and kissed me hard on my lips, shoving her tongue into my mouth. I grabbed her under her shirt by her nicely rounded ass and lifted her up. We continued to kiss passionately as we moved across the room slamming her into the wall and I set her down and turned her against the wall. I started kissing her back and moved down to her ass.
“Oh my god Derek, thats my bare ass your kiss—” she couldnt finish because she began to moan “oh that feels so good”. I enjoyed every fucking second of it.
“Lets go upstairs” she said to me. “What room?” I simply replied
“Lets go to Meghan’s, I want you to fuck me like you fuck my older sister” she said kissing her so desperately as if my lips were oxygen and she needed them to breath. We rushed upstairs to Meghan’s room and I laid her on the bed. She pulled off her shirt, revealing her small perky little tits that I saw the day before.
“You want me dont you?” she asked as she pulled my cowboy boots off and then she yanked my shirt off and then unbuckled my belt and unzipped my jeans and started pulling them down to my ankles and off of me. She then proceeded to rub her soft manicured hands all over my bare abs and bare chest. Then she pulled down my boxers, which at this point looked like a massive circus tent. and all 8 inches of my thick rock hard raging diamond dick flew out and slapped her in the face.
She was speechless, and didn’t even know what to do with it. The only words she managed to say was “can my sister take all of this?”
“She tries” I answered as I started to eat her tight wet pussy out.
She then grabs my raging rock hard erection and holds it right in front of her face, “then I’ll take it too!” shoving it all the way into her mouth, quickly gagging and pulling it out, spitting all her saliva on my boner and shoving it right back in as she kept fucking deepthroating me hard and fast, tears falling down her face, saliva all over her chin and on the bed. It was way too big for her but she wasnt backing down.
Charlotte turns around and points my throbbing hard dick at her wet pussy, and says “fuck me like you fuck my sister”
I threw her on the bed and turned her to her hands and knees, “you want me to fuck you like your sister, than ill fuck you like the dirty little slut you both are.” I shoved my dick all the way inside her mouth again causing her to gag once more, she spit all her saliva on my dick and without warning I pushed my dick into her pussy, pounding her clit relentlessly. Then I pulled out and fucked her in her tight little ass.
“Aaaahhhh yes fuck my ass daddy!!” she yelled as I started to beat her ass, pounding my dick in as my balls slapped against her pussy, stroking as hard and as fast as I could, stretching out her ass as much as I could.
My dick was throbbing and I really needed to bust bad.
“Oh shit, im gonna cum!” I yelled out as I felt my massive load working its way up my hard shaft and about to bust out of my boner.
“Cum on me daddy! Cum on meeee!” she demanded, so I pulled my dick out, rushed over to her face, started jacking my dick off as she helped by giving me a handjob and tickling my inner thigh, and I just shot my massive oozing load of hot cum all over her face and into her little mouth. I busted out so much jizz that I completely covered her face and filled up her mouth. She swallowed almost all of it like a champ.
Then I hear Meghan come in downstairs asking “Charlotte, I’m back”. I quickly grabbed my boxers and jeans and cowboy boots and put em on quick and quickly climbed out the window shirtless and hard still from my boner not having fully gone down yet.
Later that night I came back to take Meghan out to dinner and Charlotte was there too as Meghan answered the door. Meghan asked “how was your day babe”? I said “kinda boring” as I winked at Charlotte and she smiled back.
Source: reddit.com/r/sexystories/comments/7f4ceq/fucked_my_girlfriends_sister_behind_her_back_m_f
You have no idea how rock hard this got me OP. I thought my boner was going to rip through my boxer-briefs. I jacked off after reading this.