Doing My Girlfriend's Sister by Big Jim
"My name is Jim, I'm 27 and my beautiful girlfriend Melissa just turned 20. Some of my friends have said that she’s too young for me, but I only get turned on by younger girls, so I think she's just fine.
Since we've only been dating a couple of months, I go to her place about five nights a week. Melissa doesn’t own a car yet, so this works fine for us both.
This story starts in the morning after we spent a great night of awesome sex at her apartment.
I was woken up around 7am by the ringing of the phone. Rolling out of bed, I answered sleepily, hoping it might be a wrong number so I could go right back to sleep. Melissa's mother apologized for waking me before asking if we (Melissa and me) could take care of her teenage sister, Tammy, for the weekend. Melissa's Mom and Dad were going on a weekend trip to the family beach house and Tammy did not want to go along. Since we had nothing planned anyway, I agreed, hung up the phone and jumped back into bed.
Melissa was still asleep and only found out about Tammy's visit when I told her later that morning.
“Why did you agree Jim? Didn‘t you remember that I'm going to visit Kathy this weekend? You can call my Mom right back and tell her that we can’t babysit ” Since I didn’t feel like getting into a fight this early in the morning, I told her it would be fine and that if it was ok with everyone, I would spend the weekend with Tammy. Melissa was kind of touched that I was willing to look out for her bratty sister, but wanted me to ask her parents if it was ok. When I asked, the entire family, including Tammy thought it was a great idea.
The rest of the week passed quietly. When Friday came I dropped Melissa at the bus station for the trip to see her old school friend then got back into my car and headed for Tammy's school to collect her. Melissa's Mom and Dad had left earlier in the day. As I drove up to the school I saw Tammy standing in front of a group of young guys with 2 friends of hers, it looked like she was the popular girl in school. "No wonder" I thought, "she does look pretty sexy for her age". She must have been around 5 feet 4, I guessed about 120 pounds and had long, thick, curly blond hair. This was also the first time I noticed that she was much more developed than other girls of her age; it looked like her breasts were about a full B-cup. She really didn't look like she was three years younger than Melissa.
Tammy saw me sitting in the car, said something to her friends and walked over. “Hi Jim!”she said as she slid in next to me. “How are you?” I asked and we chatted about trivial things as we drove. After a few minutes, Tammy asked me if she could rent a movie and sit on the couch with a big bucket of ice to watch it. "Fine with me", I replied. I stopped at the video store on the way back to Melissa's apartment. Tammy picked out a movie called “Cruel Intentions”, I hired the video, bought ice and went home.
Later in the evening, after ordering a pizza, we sat down on the couch and Tammy put in the movie. I had never heard of it before, but I quickly noticed that it was all about sex.
“Enjoying the movie?”she asked me. “sure, how about you?” I replied. “yeah, it’s alright” she replied.
After a while, I started to feel a little awkward watching this movie with my girlfriend’s teenage sister, and decided to leave her to it.
“Where are you going?”
“I need to do some stuff for work, you have fun watching the movie.”
“But I don’t want to watch it without you” she pleaded. Eventually she convinced me to stay and watch the entire movie with her. When the main characters started getting into a really heavy sex scene, Tammy asked me if I did that to her sister. I turned red and told her she shouldn’t be asking things she didn’t want to know the answer to.
Once the movie ended, I made up a spare bed for her in the guest room, gave her a goodnight kiss on the cheek and went to bed.
It must have been around three in the morning when I was woken by someone tapping softly on my back. I turned around and saw Tammy sitting on the bed next to me. She was only wearing a G-string with a white shirt over it, her nipples sticking through the soft fabric. She told me she had nightmares and asked if she could sleep in my bed. “Sure I said, but you'd better not tell your sister or parents.” I said. As she slipped under the covers I felt my dick suddenly enlarge.
“Of course not silly” she replied.
I wanted to turn around and go back to sleep, but she said it was too cold and asked if I could hold her.
“I don’t think that’s a good idea Tam” I replied.
“Why shouldn’t it be? Please I’m so cold!” so I turned around and put my arm around her, my dick was now as hard as it gets. So we lay in a Spooning position, she started to giggle and asked if she turned me on. I rolled away and said no.
“It’s ok, I hoped you would be” she said as I felt her hand go over my chest.
“I still don’t think this is a goo..” I tried to say as she suddenly moved her hand lower and started to rub my dick. “Why don’t you stop thinking and start relaxing?” she said as her hand went inside my boxersand took a firm hold of my dick.
“Damn Jim you’re big!” she giggled.
“Thanks I suppose” I replied uncomfortably.
“Remember the stuff we saw in the movie?”she asked me, as she started jerking me off.
“can you teach me how to do that?"
“Are you sure you really want that?” I asked. Suddenly I was thinking how amazing it would be to have sex with this tight little virgin.
“Yeah I am” she said. I caught the hand that was on my cock with my own hand and pushed her onto her back. “Ok then let me show you what it feels like.”
I was lying on top of her, with one hand under her back and one resting on her belly. My left hand unhooked her bra, and she quickly shrugged it off. I dropped my head and began slowly sucking her nipples. She moaned softly, begging me to keep going as she grabbed my right hand and pushed it downwards.
“Are you sure?” I asked one more time, “yeah Jim, just fuck me” she replied.
My left hand stroked her neck, while my right hand slowly started to rub her panties. She was already soaking wet. “Damn girl you must be horny as hell.” She admitted that she was. With one smooth move I pushed away the fabric and pushed two fingers into her tight pussy. Her body instantly tightened, and she moaned loudly. “keep going Jim!!”
II sucked hungrily on her left boob as my fingers went quickly in and out of her pussy.She was moaning like crazy after a while. When she yelled that she was cumming, I couldn’t hold back any longer - I took out my hand and moved to lie on top of her. The moaning suddenly stopped and in a tiny voice she asked me what I was going to do.
"I’m gonna fuck you, Tammy!" She asked me if I could wait, but I told her I couldn’t hold it anymore. "OK" she whispered quietly. That was all I needed - I pushed down my boxers, tore apart her tiny panties and pushed the tip of my rock hard dick into her pussy.
"Damn this girl is tight!" I thought as I started slamming my dick in and out of her.
She screamed in the beginning, as a little blood flowed out of her pussy. As I ignored the cries and kept fucking her, the screaming turned into moaning. “ohhh please Fuck me Jim...Fuck me!”
Suddenly her body tightened and she went quiet as she had her first orgasm during sex. I stopped, but slowly began pumping again because I could feel I was gonna cum. I pulled my dick out of her pussy and climbed on her belly. I lifted up her head and started fucking her mouth. Even though she had clearly never been fucked before, she was a natural with her mouth and I knew I had reached the point of no return.
As I came into her mouth, she tried to swallow it all, but didn't quite manage it and spilled some on her boobs. I lay down next to her and watched her using her fingers to wipe the cum off her boobs and licking it off her fingers until we both fell asleep.
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