Over the rest of that summer we fulfilled a lot of our respective fantasies, but it obviously had to come to an end. Although I was about to start at the same college Julie goes to, before we left we had a couple conversations and decided that we couldn't continue what we were doing while at school. It would look suspicious for us to hang out alone all the time, with me in the dorms and her in a house with four other girls. Plus, we thought that I'd probably lose out on a lot of opportunities to get to know people if I was always hanging around her and her friends. It was hard at first, after having each other available almost constantly for the last month, but in the end it was probably for the best. I was able to find other girls to fulfill the needs she left me with, and I'm sure she found other guys.
We went on vacation as a family over our winter break, so it was impossible to do stuff then, too. Annoying, but bearable. The blow was softened somewhat by the view of Julie and my mom in bikinis on sunny Florida beaches.
Finally, after eight months, our end of year exams all done, we were headed home for the next four months. We drove back together the Sunday after exams ended filled with excited, nervous energy, our conversation never mentioning anything about what I'm sure we were both thinking of doing in the coming weeks.
I almost got up in the middle of that night to sneak into her room but decided against it. The next morning I got up relatively early and headed down to the kitchen, the site of so many of our adventures, to be met by my mom getting ready for work.
"Morning."
"Hey, I'm running late," she said as she took a packed lunch from the fridge and shoved it in her bag. "Will I see you tonight?"
"Yup, I've got no plans."
She nodded, giving me a peck on the cheek and then leaving. I watched her walk down the hall to the front door, skirt hugging her hips nicely, wondering what kind of panties she was wearing. I decided I'd ask Julie to wear them tomorrow, as she'd done a few times last summer. The illusion wouldn't be as complete, since mom had chopped her chestnut curls below the ear, so they didn't look quite so similar from behind, but my dick stirred at the thought nonetheless.
I gathered some breakfast and started eating slowly. I was almost done with my second bowl of cereal before Julie finally came down in a shirt that just came down to her thighs.
"Hey," she said, then smirked when I didn't reply. "You okay there?"
I nodded, suddenly more excited than I'd been in ages, cock rock hard in my boxers in anticipation for what I knew was about to happen.
Julie got a glass of water, turning her back on me and leaning on the counter, and there it was. The moment that had driven me crazy for years, as her shirt rode up a notch and the underside of her ass was revealed and the bottom of her pink lacy panties came into view.
I hardly remember getting up, but suddenly I was behind her. I reached out and traced the line where cloth met skin, sneaking a finger under and gently squeezing her ass. She gave a quiet moan when I pulled myself against her, hands at her hips, my cock pressing against her through my boxers and her panties. I removed my hands for a moment to rip off my boxers, then began to rub Julie's pussy over her panties.
I moved to kneel down, planning on eating my sister out, but Julie interrupted with the simple command of "Fuck me." I grasped the waist of her panties and pulled them down a few inches, revealing her asshole and her beautiful shaved pussy, lips shiny with her juices. I placed the head of my engorged cock at Julie's entrance and pushed steadily until I was halfway in her. After removing myself and pressing into her one more time I was already sufficiently lubricated, sliding until the base of my cock met her lips. She moaned as I entered her, and soon I was thrusting, each stroke removing my cock till only my head was in her before I reentered.
It was only five minutes before I came deep inside Julie's cunt, spurred on by one of her own orgasms, cock pulsing as my cum filled her. I stayed in her for a minute, then pulled my semi-erection from her, releasing some of my cum to drip down her legs. Julie pulled up her panties, trapping the rest, and turned to face me.
"I'd forgotten how good that felt," she said breathlessly. I nodded. Nothing I'd felt in the past school year had come close to what we'd just done.
Julie turned to leave the kitchen, and I followed her upstairs to her room, where she took off her nightshirt, flinging it carelessly onto the floor. She bent over a drawer and rummaged through it, breasts hanging, still-hard pink nipples pointed at the floor. She glanced over at me standing there, still naked, and raised her eyebrows.
"Think we could, uh, go again?" I asked hopefully. My hardon had come back to full strength, something that had only ever happened directly after an orgasm when I was with Julie.
She gave a short laugh, then dropped her panties, stepping out of them to walk towards me. She pushed my chest lightly, guiding me until I was sitting on her bed, her breasts at eye level. My cock twitched.
"That might be possible," she said softly, looking down at me. She knelt on either side of my legs, lowering herself, my hands at her back to support her. She guided my cock into her for a second time, pushing me to lie on the bed, and began to ride me slowly. I simply lay there and enjoyed it, hands exploring the body that I had missed so much, running up her thighs and sides, pinching her nipples and massaging her breasts. Her eyes were closed as she continued to rise and fall in a steady rhythm.
We went on like this, changing positions every once in a while, no longer frantically striving for release but enjoying the sensations of each other's bodies. At one point Julie got up, moving to her panty drawer and removing a pair - baby blue cotton - and came back, having me kneel. She slipped behind me and wrapped the panties around my cock as she pressed into me, her soft boobs compressing against my back, hard nipples poking me. She stroked me sensuously with one hand, the other gently playing with my balls, lifting and massaging. She kissed the back of my neck and shoulders softly, and soon my entire body shuddered as I came, filling the panties wrapped around me as my sister teased my shaft.
Julie stepped back off the bed, bending down to pick up the earlier pink pair of panties and dropping both soiled pairs into her hamper.
"I'm going to meet up with friends soon," she said, once again opening a drawer and rummaging through. "I probably won't be back before mom and dad. Do you wanna just come to my room tomorrow morning?"
"Yeah, sure." This would be simpler than waiting for Julie in the kitchen only to end up back in her room anyway, which was what usually ended up happening. I left her as she picked out an outfit to shower, washing the sweat and cum from my body, for the moment utterly content with my existence.
****
I woke at 9 the next morning, went to the bathroom, then opened Julie's bedroom door and slid into bed behind her, discarding my boxers next to the bed. I spooned her, wrapping my arms around her waist below her nightshirt and nuzzling her neck. She gave a tired groan so I reached up and pinched a nipple, which got an indignant yelp. I ignored this and continued to play with her tit, which she allowed me to do with no further complaint. By this point my cock had hardened, and she shifted, trapping it between her legs. She reached a hand down to play with it, not really trying to do anything, just gently squeezing and stroking the head.
I eventually moved down, reaching into her panties to gently caress her lips. After a bit more of this I threw off the sheet that covered us and lifted Julie's leg, moving the crotch of the white thong that she wore to the side. She guided me into her, and after a few short thrusts I was buried in her.