Here you were again, staring at your big sister from across the table. Of course, Samantha was looking as radiant as ever. You looked next to her, and instead of yourself, you saw John... yet you couldn't help but to feel better than him, knowing you've fucked his wife twice now. You smiled to yourself and followed where her gaze currently was set. On your little sister, Cassie. Since your escapades with your older sister, you honestly had been thinking about your little sister quite frequently. Did Cassie also have hidden feelings for you? Had Samantha and her talked about them, if she did? Did she know about you and Sam? You had no idea, and were slightly afraid to find out. She was visiting for Christmas holiday, as well as her birthday, from the school she was currently attending. Cassie was turning eighteen today, and the whole family was celebrating her "blossom into womanhood".
You let yourself stare at Cassie, her smooth and shiny brunette hair, her cute little smile, her slightly rounded face. You looked downward more towards her chest, and further to her breasts. She'd just started developing in the past few months, being an extremely late developer, and you noticed that your little sister was growing up into a woman. You'd envisioned many times what she would look like when she was older, but you decided that her current state aroused you a considerable amount more than imagining what she might become. You wanted to know what she looked like underneath her shirt; you hadn't been able to see her shirtless since she was a little girl. But you wanted even more to know what her sweet pussy looked like. You were sure she was a virgin, you and your parents were very protective of her and she was just too innocent to have lost that yet. She still had the little girl glow and spirit, but you knew that she was not ignorant, just inexperienced. The thought aroused something within you that you knew wasn't supposed to be there.
Dinner soon came to a close, and as always Sam and John and everyone else was slowly filtering out. Cassie had opened gifts already and everyone took home an extra piece of cake for their late-night snack. You said goodbye to everyone and decided you would be a nice brother and help Cassie carry all of her gifts to her old room. She still had Barbie dolls everywhere, posters of ponies and things of the sort, things that any normal five-year old would have; since then she had been off at school, except for holidays, which were spent with family, not redecorating. Her walls were baby-pink and her room was actually very cozy. The two of you brought in all of her gifts, and, seeing the time, you let her get to bed. You went into the living room to say goodnight to your parents only to find out that they were leaving for the night to go stay with Sam and John, for some reason that you didn't really pay attention to. You were just glad to have the house to yourself... well, mostly to yourself.
Saying goodbye to them at the door, you quietly moved to Cassie's room and opened the door a bit. Her bedside light was on, but she slept with it on. You watched her breathing to make sure that she was sound asleep before you tried anything sneaky and devious. Thankfully she was, her breathing was deep and she wasn't moving. This satisfied you enough. You smiled to yourself as you closed her door and made your way into the living room, where your computer awaited you. You wanted to have a quick orgasm before heading off to bed, and the Internet was the easiest way to achieve this.
You went to your normal porn site and started browsing, slightly rubbing your cock through your pants. Finding the link to chat with horny women online, you brought your hand up to click on it, and a message came up on your screen within five seconds. The two of you started chatting, you started playing with yourself, and within about five minutes she had you close to orgasm. You were just about thirty seconds away, you could feel the cum in your balls starting to boil, so to speak, when you heard a door shut further down the hallway. Instantly you knew it must be Cassie because no one else was home. Hurriedly, you stuffed your rock hard cock into your pants, leaned forward in hopes to hide your erection, and closed the website, opening up MSN homepage. Thank god for DSL.
"Jake? Are you alright? I heard someone breathing hard, it sounded to me like they were being choked or something and I wanted to make sure everything was okay," she chirped in her sweet, innocent voice. You tried to go along with it.
"Oh I'm fine, it was just this website that I was at, it was playing a preview for a movie that had sound and I didn't realize how loud it was going to be. I closed it, though. I'm sorry it woke you up." Yes, perfect.
"Oh. Okay then. Where's Mom and Dad?" she inquired, looking around and seeing no one there.
"They went to Sam's and John's for the night, they'll be back tomorrow morning, though, baby girl." You'd called her baby girl since she was little, and you thought that maybe she was becoming too old to have such a nickname, but you liked it. It kept her young in your eyes.
"K. I'm going to head back to bed now."
"Alright. Goodnight baby girl," you said. You leaned back slightly, forgetting temporarily about your erection, and not really realizing that it would be showing.
"Night," she said. Her eyes had instantly jumped to the tent in your trousers, but she quickly blushed and ran away.
'Oh god,' you thought to yourself. 'She saw that. Damn! I hope she doesn't tell Mom and Dad because now she KNOWS I was looking at porn.' But you shrugged it off, they knew you looked at porn so sitting through the "porn talk" wasn't that bad of a punishment. Still, it made you a bit uneasy knowing that your little sister saw that. It sort of... aroused you. But no, it couldn't. Your big sister was one thing, but your little sister? She's barely eighteen! You shook your head and threw the thought from your mind. You signed off of your computer and decided to go to bed. You needed to cum, but not here out in the open. Walking into your bedroom, you turned on the lights and found Cassie sitting on your bed.
"Cassie? I thought you were going to bed?" you asked, bending down to pick up something off of the floor to keep your now bigger erection hidden.
"I... Jake... well, I know some things," she stuttered.
"What things?" you asked, standing up fully now, still in your doorway.
"Sam and I DO talk, you know."
"She told you about me and her," you half-sighed out, half-stated.
"Yeah," she replied, blushing and looking down. She may know things, but to you it was arousing that she was embarrassed about admitting that.
"So what do you want? Money? Clothes, shoes? What?"
"I... I don't want anything. Never mind," she blushed and got up and tried to brush passed you, but you held your arm across the doorway and stopped her.
"Cassie," you said quietly, looking down at her. She looked back up at you with the most innocent brown eyes you could have ever imagined; she was not trying to get through the door any longer. "What is it?" She looked at you harder, deciding if she was going to tell you or not. The inner child within her could not hold the secret longer than about fifteen seconds.
"Samantha said you made her feel really good. She said you made her... made her..." she faded off, too embarrassed to finish her sentence. She looked up at you, hoping you understood what she meant.
"I made her cum, you mean?" you interjected.
"Yes, you made her... cum. I, I've never... cum... before..." she faded off.
"Cassie?" She looked at you again. "Do you want me to make you cum?"
"Please, Jake," she quietly said. Her eyes were looking deep into yours, and you saw how nervous and scared she was. You realized you didn't even know if she'd been kissed before or not. Suddenly the pressure of pleasing Cassie flooded upon you and you began to get nervous yourself. You felt yourself start to slightly shake and didn't think this was a good idea. What if she told? She seemed to easily tell you about her knowing about Sam and yourself, so who's to say she wouldn't tell hers and your parents? You knew she loved you but even if she told by accident, it was extremely risky. The thought shook you up and you almost forgot why you wanted to be with Cassie in the first place.
"I don't know, Cassie," her expression instantly slumped. She frowned and her eyes started to get wet.
"But Jake, I won't tell anyone. I promise I won't. Please Jake, I really want to... do things with you," she blushed.
