It was a few weeks before winter break which meant that our college finals were coming up soon. My girlfriend Kara and I had been sharing an apartment so we went through all the nuances of living together. The best part about it, though, was being close to each other most of the time, and the sex.
Our apartment had 2 rooms for each of us but we spent most of the time in each others rooms having sex or sleeping together. Although Kara seemed like a cute innocent girl on the outside, she loved her pleasure and never failed to have a little fun.
Her sister Kaylee on the other hand never showed too much interest in dating or having sexual partners. She would spend a decent amount of time with us considering we all went to the same college and she still lived in a beat up dorm, but not too much that it was unbearable. She was a nice cute girl who, much like Kara, loved to dress in cute clothes to look nice. Though since she was at our apartment sometimes, I did get a few good looks at her in shorts or her workout clothes.
Both had beautifully bodies but since Kaylee was older, her figure was a little more defined and her breasts and butt were a little bigger than Kara's. I'll admit she did have a more pronounced body than her sister but I tried not to get too carried away.
One day when I arrived home after class, Kara's sister was cooking lunch in nothing but her t-shirt and panties. I'd never seen her this way before and I immediately felt my cock grow hard.
"Don't mind me John, just fixing us up some lunch while I do my laundry," Kaylee said enthusiastically.
I then quickly went to my room to set my things down. I needed a few minutes to take in the beautiful sight that I had just seen so by the time I came out again, Kaylee had put on some pants and began to eat the lunch she made for us. That was the last time I ever saw her that way.
Some time went by and my girlfriend and I had just finished our last college final of the semester so she decided to go out to a party at her friends house on the weekend.
"Oh I forgot to mention John, Kaylee might come over to pick up some things she left here so don't be surprised if you see her," said Kara.
My mind went straight to the imagine of her in her underwear. "That shouldn't be a problem, have fun at the party," I said. I hadn't been alone with Kaylee in a while and my heart was racing at the thought of her. I calmed down and started to watch some tv. It was already about 10pm and i started wondering if Kaylee was going to show up soon, then i heard the door lock opening.
"Hey John, its Kaylee," said the cheerful voice from the kitchen.
My heart stopped, but I walked out of my room to greet her. She was wearing bright blue leggings and a tight tank top, she looked a little sweaty but something about her made her look more attractive to me. "Hey Kaylee, what's up?" I said.
"Not much, just came back from the gym. I came to pick up some books I left with Kara."
"Oh yeah she mentioned that, well you can go ahead and get them, like always just make yourself at home."
"Great, thanks," she said as she set her things down on the table.
I said, "How was your day been?"
I'm not sure why I asked but I was genuinely interested in how she has been.
"It's been great! I finished my last final yesterday so I just took a chill day and decided to go for a night gym session, those always make me feel better."
"Hey thats great, I'm glad you had a good day," I said. It made me happy knowing she was enjoying her final times in college before she graduated.
"Also, I worked out the glutes today, how do they look?"
She then turned around while still looking at me and put one leg back to show her growing muscles. Her ass looked amazing in those leggings, you could really tell she had been working out.
"Wow, you look great," I said. What I really wanted to say was how hot she looked, and tell her all the things I wanted to do to her beautiful body but I knew that was out of question.
"Thanks! Lets see how much better I look with more time in the gym. Anyways, I'm gonna go get my books," she said and left to Kara's room.
I then went back to my room to lay down. I couldn't wrap my head around what was happening. My heart was racing and I could feel the growing erection in my shorts. I started to stroke my growing cock but stopped when I heard Kaylee's voice.
"Hey, I'm still all sweaty from the gym. Would you mind if I took a quick shower since its much better here than in my dorm?" said that sweet voice again.
Of course I don't mind, actually let me shower with you, I thought.
"No that's definitely not a problem. Like I said, make yourself at home!" I said trying to stay calm.
"Thanks John!" she said and went to the bathroom.
At this point my cock was now fully hard at the thought of my girlfriend's sister being completely naked, showering in my apartment. I heard the water running and began to stroke my 8 inch cock at the thought of her. I imagined all the things I could do to her beautiful body and perky ass. I thought about finally being able to see that wild side that Kaylee never showed anyone. Then I heard the water turn off so I stopped.
A few minutes go by and Kaylee walks into my room. She was wearing some of Kara's clothes since she forgot hers, grey sweatpants and only a grey bra. She looked stunning, and seeing her in Kara's clothes made it all the more exciting. She then jumped into bed next to me, I wondered where all this sudden friendliness came from. We were always friends but never to the point that she asked me to look at her butt and her jumping on my bed in a bra.
"I wonder if I'll ever have a relationship like you and my sister," she said. I could tell she was a little down.
"Of course you will, any guy would be lucky to have you." Her face lit up.
"Do you really think that?"
