I desperately wanted to see more, but was already so turned on that my dick felt like it could blow at any moment. I rubbed myself firmly and, since she was turned around, I used my free hand to pull the edge of my boxers away to give myself more room to work my erection. I drank in the sight of Sara’s body and used my precum to swirl my fingers over the head of my throbbing cock.
When she reached around to cup her breasts again, the sight and thought of it was too much more to take and I grunted and ejaculated fiercely. Semen erupted from my dick, splashing me in the stomach and my heaving chest.
When she turned back around, smiling sweetly, I had already put my boxers back in place. She gawked and grinned, blushing when she saw cum splattered over my chest, letting out an “Oh my gosh!!!” but I was too relaxed and mellow to care much about it.
Pulling her eyes away from my mess and grinning, she reached out, asking for her bra. I reached down and grabbed it and she reached for it just as I gave her a mischievous smile and held it away from her. She pursed her lips and stepped forwards to try to grab it, but I tucked it under my covers.
In a careful whisper she said, “Alex! Give me my bra!”
I grinned back but didn’t offer it. She tried to reach over me and got her hand under the covers but I held onto it. As we playfully struggled over it I gave a quick tug and caused her to fall against me so I could tickle her. She squealed and flailed.
She quickly righted herself and pushed me, laughing, and completely forgetting that she was topless. For just a second when her arm moved free of her breasts I saw the entire side of her breast before she realized her exposure and covered herself, quickly blushing.
Seeing me chuckling, and with a determined grin she launched herself at me and tickled me back with her free hand and I flailed, then grabbed her by the waist and tackled her, rolling onto her to pin her. We were one big, sweaty, fleshy, writing mess for a moment as we playfully struggled with and fought each other until I finally had her pinned, holding her arms out on either side. We both stopped struggling and smiled and laughed, panting, but the game quickly faded as we realized how near to naked she was under me, with my bare chest on hers and my boxers against her panties.
We looked into each other’s eyes, smiling for a few moments and I gently released her arms and started to get up. She stopped me quickly, saying, “Oh no you don’t, not yet.” and wrapped her arms around my back to hug me against her. I happily complied, pushing my arms beneath her and hugging her against me, thrilled at the feeling of having her so close to me.
We finally let each other go and I moved off of her and looked away so she could get her bra back on. As she was doing this, I heard her stifle a laugh.
“Hmm?” I asked.
“You got your stuff all over me. I’m all wet.” She said, letting me look now that she was covered. She was right, her chest and stomach glistened where my cum had smeared on her. Her panties also had a damp spot on the elastic. She was smiling, amused. “Remind me to return the favor sometime!” She quipped, and then threw her robe on. We exchanged happy glances and she left to go get cleaned up. I flopped back into my bed and replayed the night over in my head.
***************
The following morning I woke up feeling entirely the opposite as I had felt on Saturday. All I could think about was how wrong it was that Sara and I were getting physical. I guess I was panicking, and having spent most of my sexual drive the prior night I was having a hard time justifying what we were doing.
I resolved in my mind that I wasn’t going to let Sara keep doing this with me. Unfortunately I didn’t have the nerve to tell her, so I wrote a quick and awkward note telling her I was sorry about last night, that we should probably stop and we could talk about it later.
I made it a few days through the week barely seeing Sara and when I did I wouldn’t say much. She was obviously confused and wanted to talk but I kept going out, just so I didn’t have to deal with it.
By that Thursday though, I was starting to remember how strong my urge for sexuality was. It didn’t hurt that one of the hottest girls in the technical school I was attending was in one of my main courses and we’d been working really closely lately.
Her name was Tanya. She was the same age as me and really into mechanic work. She wasn’t sure she’d ever actually work in a garage but she was determined to try. She had long, brown hair and green eyes, a very shapely figure and a really pretty smile. The tough thing about working closely with her was that she was a flirt, and when the guys were making dirty jokes she’d jump in and end up showing the guys up with her wit and knack for vivid descriptions.
She’d begun to show some interest in me the last two weeks and the glances and smiles she’d give me, the jokes she’d tell, how close she would stand or how she’d touch my shoulder when she laughed, it was all driving me a bit wild. It was frustrating though because every time I found myself thinking about Tanya, I’d start thinking about Sara. Here I was with a really hot girl beside me and all I really wanted was to be with my own sister.
By the time Friday rolled around, I was exhausted. When I got home that evening after spending time out with my friends our parents were still up and I was bored by the show they had on, so I went back to my room. I read for a while, and then checked my email. As more time went on, I could feel myself wanting to type in one of the porn site addresses I used to visit so often. I didn’t really want to, but sitting right there, alone, in front of my computer, I couldn’t think of many strong arguments against it.
I reflected on the previous Saturday’s bliss which had seemed so good and right. But if I was going to treat Sara right I had to control my urges… so wouldn’t going back to porn be the easy way to do it? I started to type in the address… then stopped. I realized how hard my heart was beating and that my hands were shaking.
I could just try to find something to get me excited – lingerie or swimwear. I looked up a few sites and scanned over some beautiful models. Then I started feeling nauseous.
It didn’t feel right. The girls were wearing more clothing, but I was doing what I had always done. Not that it ever felt right, but until now it had never bothered me this much. I leaned back in my chair and closed my eyes. I looked at the screen again and could almost imagine myself looking at one of my favorite porn sites. I felt my heart racing again. I shook my head to clear it and before I knew it I had yanked the plug of the power strip from the outlet. My computer, monitor, printer and everything else shut off.
I breathed deeply, trying to calm down. This was such a weird feeling. I just couldn’t do it. I couldn’t disappoint my sister like this. Not with all she had done for me. I couldn’t let her down.
Dejected, frustrated and confused, I put my head down on my desk.
Fifteen minutes later I was still in the same spot when I heard a knock on the door. I knew it was Sara. And I knew I couldn’t stay like this without her. I asked her to come in and she did so, quietly, but with a look of determination.
“Hey.” she quietly whispered and she looked at the computer, then at me.