[M]y Girl[f]riend's Little Sister... Part 1

So this story dates back a few years. I’m “Dan” and I’m currently 24, this happened when I was 20. I was a college student living in a house with two of my best friends. My girlfriend, lets call her Christy, was my same age and had just moved to the town where I was living when she transferred schools. We were both sophomores and had been dating since the summer between our junior and senior years of high school, so I guess you could call us high school sweethearts. I was convinced I loved her and I believe she was convinced she loved me too. Later we both found out that there was no love between us… but that’s not the point of this story.

Now Christy had this younger sister, lets call her Erica. Erica was a senior in high school. However, Erica was a little young for her age. She had one of those spring birthdays, so she was turning 18 the week she came to visit her sister on her spring break. Erica had hung out with her sister and I for a couple years at times. She was no stranger to partying or drinking. But she was actually quite conservative when it came to sex, or at least it seemed that way.

Erica showed up on a Tuesday. Both her sister and I were busy with schoolwork, so Erica just stayed with her sister and I didn’t see her until Wednesday, her birthday night. Now… I haven’t described to you what Erica looks like, but let me take the chance to enlighten you now. Erica is thin, but athletic. She has perfect legs and, unlike her sister, an amazing ass. She had tits that you could tell were the perfect handful. No less, no more. As far as her face goes, well… just imagine the stereotypical “girl next door” and give her a little attitude. Flowing blonde hair, seductive brown eyes, and a smile that could make any guy feel a little firm. This night in particular, Erica wanted to show off her newly “legal” body. At least that is what she jokingly said to me when she showed up in 4-inch heels and a skintight blue mini dress that barely covered her ass. She gave me a hug and I could smell the alcohol on her breath. Christy and her had been pre-gaming a little as they were getting ready. I hugged her tightly back; it was good to see her.

Erica and I had always had a pretty cool relationship with each other. Despite the fact that I was, and had always been, extremely attracted to her, I was able to treat Erica like she was a sister of sorts. She treated me like I was her brother, and would occasionally tell me so. She called me when she needed help with boys or help saving her from some boy. We always jokingly flirted, but it was nothing beyond very subtle jokes. I could tell this night was going to be different though…

After hugging me for a second, Erica squeezed my ass and let go. I was a little surprised, but I didn’t think much of it because I thought she was just a little drunk and happy it was her birthday. She smiled at me after she let go and said hi to my roommates, who she also knew. I hugged Christy and we talked about how school was going. We all started to drink for an hour or two and around 10:45 we walked to my friend’s party. We all got drunk, we all danced, and my roommates went home with a couple girls. Nothing of note really happened that night, except this: at one point when I was dancing with both Christy and Erica, Erica turned around and danced with me face-to-face as her sister was dancing behind me. Erica dropped it low and came up slowly, her chin grazed the crotch of my pants as she came up, and she grabbed my package with her hand once quickly before she turned around and started dancing with me as she was before. Christy didn’t even notice.

I was drunk and confused about how to interpret that, so I just left the two sisters on the dance floor and went to drink with some people I know. Christy and Erica would have to get a cab home if they wanted to stay at Christy’s place, so, at the end of the night, I just suggested they stay over with me. They both agreed and we walked home.

I suggested that they take my bed, and I take the couch. But out of the both of them, Erica was the one that says I should stay in bed with them. So the three of us squeeze into my queen size, Christy in the middle. That Thursday morning, Christy wakes up and goes and grabs her books from her place to go to her 9 am class. This leaves Erica and I still sleeping in bed… with no one else in the house. I fell asleep for a minute after Christy left, but I woke up to the feeling of Erica’s ass rubbing into me. I didn’t open my eyes, but I knew she wasn’t asleep. I knew she was doing this to me on purpose. But I didn’t know what to do; I was stunned. So I kept pretending like I was asleep, but I couldn’t keep myself from getting hard. My cock slowly began to grow until I was fully erect. Erica used her ass to jack off my cock for a minute and then she rolled over. I felt her hand run slowly from my hip down to the waistband of my boxers. She slides her hand in my boxers and lightly wraped her fingers around my cock.

At this point I could not pretend to be sleeping any longer. I opened my eyes and saw her looking straight at me, biting her lip. I didn’t move her hand, didn’t pull away, I just asked her, “Erica… what are you doing?”

Erica loosened her grip on my cock and started tracing her finger on my chest. Now I don’t remember exactly what she said, but I know it was something along these lines (although my memory may have embellished some facts): “Dan… I see how you look at me. And I know what you like in bed, my sister tells me. And… well… I want to try some of those things. I want to get fucked Dan. I’ve had sex before, but I’ve never been fucked. I trust you. Please…” Her voice trailed off and she pulled away for a second, waiting for my response.

I decided to go against everything going on in my head. I decided that this time, for the first time in a long time, I’m going to think with my dick. “Erica, your sister cannot know about this. She can never, ever know. And this can only happen once, OK?”

“OK,” she responded and quickly kissed me. I pulled her body close a started kissing her neck as my hands ran over her teen ass. It felt amazing! I was swimming in sexual passion with Erica and I could tell she was too. I took off her shirt, leaving her in just panties, no bra. I stared at her perfect pink nipples. Then Erica quickly ripped back the sheets and pulled down my boxers. She stared at my cock for a second then kissed me passionately. Then, she moved between my legs… and started to kiss my balls. I moaned out as she started to lick up my shaft. Then, without warning, Erica stuck my cock in her mouth, trying to push it into her throat. She gagged a little and came up. She smiled and tried again. I don’t have a huge cock, only about 7 inches or so, but it was so hot to see her struggle to deep throat me. She never quite could, so she started to jack me off as she sucked my cock, spit and precum dripping out of her mouth every time she pulled my cock out of her mouth.

I wanted to taste her young pussy so I pulled her around into 69 and ripped down her panties as she continued to suck my cock. She was soaking wet before I touched my tongue to her, and she shuddered as I bat her swollen clit around. She started to press her pussy down on my face harder and stopped sucking my cock. Instead just holding it while she moaned. I could tell she was ready to get fucked, and I couldn’t wait to feel how tight she was.

I stood up and had her stand up too. I spun her around and bent her over the side of my bed. I grabbed my cock and rubbed it against her clit for a second, and then slid it deep inside her. She moaned out loudly and I hoped that there still wasn’t anyone home that could hear us. But I just started to fuck her harder, and harder, and harder. Her ass was giggling just perfectly so I smacked it every so often. Then, I flipped her over on her back and put her legs up on my shoulders. I stood next to the bed and fucked her hard. I slowed down every time I saw her building up to the point where she was going to cum. We fucked with her on top of me, up against the wall, and in reverse cowgirl. It was in that last position that she came, and I could feel her tight teen pussy grip onto my dick as she yelled out my name. I was getting close too, but I let her cool down for a second.

Then, I flipped her back over into the first position we were in: her bent over the bed. I grabbed her by the hips and fucked her as hard as I could. No longer was I concerned about making her cum. Now I was just using her for my own personal pleasure… and she loved it! She was rubbing her pussy and yelling at me to keep fucking her. I could feel it building up, I could feel myself getting closer to climax. I pulled out my cock and yelled at her, “GET ON YOUR KNEES!”

Erica didn’t even think twice. She got on her knees and opened her mouth, sticking out her tongue in anticipation. I stood over her and made eye contact with her as I jacked off. Then, how hot this whole thing was… just how sexy the fact that I was about to cum on my girlfriend’s newly 18-year-old sister… it all washed over me. And when I had that realization, I came. I came hard! I moaned out her name and shot four ropes out. The first landed on her tongue, the second on her right check. The third and fourth ropes hit her chin and chest. I stroked my cock a few more times and then sat on the bed. Erica tried to look sexy with cum on her face; she licked up what she could. To me, it actually looked more cute than sexy though, and I still don’t know why.

Erica cleaned up and her sister came back from class about 30 minutes afterwards. We all went out to lunch and I went to class. The rest of the time Erica was there, which was a couple more nights, things were normal. She left that Saturday and drove back across the state to where we all grew up. I was still in disbelief that what happened with her actually happened. It was like something out of a dream, and it kind of felt like one. That Saturday night I was doing homework alone at my house when I got a text from Erica, “Too bad you said we could only do that once…”

Will post the continuation of this story if there is enough interest…