First time with my sister - what started it all Part 1

My lovely sister Jen and I had always been close. We rarely fought and actually enjoyed each other's company since we were very young. At this time, I was 14 nearly 15 and Jen had turned 16 a couple of months back. Jen was, and still is, rather attractive. Long straight sandy blonde hair, green eyes, a nice tight body with perfect size breasts and great eraser tip nipples. Tallish for a girl, maybe 5' 8" or so at the time. Nice long legs and a great ass. All that being said, her best asset is her pretty girl next door face. Looking at that innocent pretty face you would never guess the naughty horny nymph inside. Sorry this story is a little long, but I wanted to impart the growing sexual tension that was occurring between us that night versus just jumping to the main action. Anyway, it was a Saturday night and school had just ended for the summer. My Dad had to go out of the country on a business trip and he left Saturday night to be ready to go on Monday. My father was single, so it was just me, Jen and our brother at home. Since he was gone, we all had to be home by 10 with no friends staying over. Of course, my brother had snuck his girlfriend in right after dad left and they were secured in his room most likely screwing their brains out. I mean who wouldn't? Unlike normal, I had only jacked off once that day earlier in the morning. For whatever reason what should have been round 2, 3 or even 4 didn't happen. so, I am sitting in our game room watching the the steamiest move I could find on cable and thinking about watching one of the porn tapes I had "borrowed" from my father as I was feeling rather horny. (He had quite a collection that wasn't out in the open, but not really well hidden either. I had discovered them some time back). I was just about to start watching and jerking when I hear Jen come in. Fortunately, I was still dressed, but I was sporting a chubby when she walked into the room. The tape was still in the VCR. She plunks down and chats with me for a bit. Normally on Saturday night, she would still be out with her boyfriend and staying at one of her friend's houses or have them here. She was a little fidgety and wanted to be out. After a bit she asked me if I wanted to go swimming. She wanted to get clean but didn't want to shower. For us, the pool often served as a surrogate on weekends during the summer. What I really wanted to do was jack off, but the thought of seeing my sister in a bikini peaked my interest. Yes, I had seen her many times in a bikini, in her underwear, etc., but she had developed quite nicely and I thought a little peak and then out of the pool to my room for relief. We change and head outside and I notice she is wearing a pretty skimpy bikini. When my dad is home she wears a bikini that covers everything pretty well. This time she is wearing one that does not. I am behind her and at least half of her tight ass is showing, when she turns to put her towel down outside I can see the top section covers maybe half her breasts and the bottom comes up just above pubic area. Damn! I felt a thick chubby growing in my trunks. We get in and swim and splash around for a while. The pool light was off and the shutters to the house closed, but some light still filtered out. Enough that I could see her hard nipples under the thin fabric of her bikini. My chubby growing bolder! After a while she swims over to me and looks at me mischievous look and asks me if I want to skinny dip. I knew Jen loved to skinny dip with her friends, but my father always made me and my brother stay inside and not peak, which we always found a way to do anyway. Now she wanted me to join her. I was eager to join, but also a bit self-conscious about my cock which was nearly at full erection. Anyway, in a flash we were both naked. Jen was not shy at all about being nude in front of me. She floated on her back letting my eyes soak in her wonderful young body and I noticed her pussy was perfectly smooth. Now my cock was rock hard. She talked about how much she liked skinny dipping, how good it felt to be naked outside. I fully agreed. She did not know about my nocturnal adventures masturbating outside and I liked the fact that she liked being naked outside as well. She really didn't look much at me and I had mixed emotions of relief at not being embarrassed if she saw my hard on and disappointment that she didn't try to sneak a peak. Puberty had hit me hard and I was no longer a skinny kid, but a reasonably well built young man. My cock had grown quite a bit, my pubic hair came in nicely, and I was shooting pretty good size loads. All things I was rather proud of. We were making enough ripples that she probably could not have seen anything anyway. We started goofing around, dunking each other, wrestling a bit, etc. I loved the feeling of her body, her breasts against my back or chest and I knew she could feel my cock as it brushed against her arm, her leg or her butt. Once, she swam up to me under water and surfaced right in front of me, so close the tip of my cock lightly brushed against her lower tummy and spit water in my face. As I laughed and wiped the water from my eyes, she stood right there, my cock lightly brushing against her - she had to feel it. I dunked her and as I did so, my cock slide gently against her chest a bit as she went down. I thought I was going to cum right then! She came up laughing and said she had an idea - let's do bubble massages! Bubble massages, what a great idea! A bubble massage is when one person stands with legs spread and another person takes a breath goes underneath them and slowly blows a stream of bubbles that flicker and tickle their way up your body. It feels great. We did it all the time and I loved doing it with her friends. I had noticed girls always did guys, but Jen and her friend would do it with each other. Of course, we had never done it naked. Anyway, Jen wanted to do me first. It took a bit of adjustment to get the position right so that I could hold her under water while she had a full breath. Jen held my hips and I could see her position her face right under my butt, basically between my butt and balls and she let out a stream of bubbles. It felt so good! Those bubbles tickling up my balls, my throbbing cock, my stomach and back. Another breath and she did it again, now a bit closer to my balls, basically blowing right under them so my cock and balls were bathed in bubbles. her lips just an inch or so from me. One more breath and she blatantly blew the bubbles from my balls up the length of my dick. I wasn't sure what was happening or where this was going, but it was fun. When Jen surfaced, a bit out of breath, she grinned and asked me how that felt. I said something along the lines of awesome. Now my turn, I basically repeated what she did to me. I went three times as well, each time getting a little closer until the last time I blew the bubbles right along her slit and stopped where I guessed her clit was to give an extra hard blow. Yes, at that age I knew what a clit was and what it was for. The benefits of a naughty curious mind and porn tapes. We repeated with each other several times with the bubbling focused on each others' intimate parts. After my last time of doing her I came up and she was breathing a little heavy, a look I had not seen before on her face. We agreed how great that felt and she asked me if I wanted to go inside and watch one of those soft porn movies on cable that a particular network shows on Saturday nights. We had a term for it, you all probably know it, just not sure I can say it here. As we got out Jen made no attempt to conceal her lovely body she just walked over to her towel and started drying her hair watching me as I came over to get my towel. I was a bit nervous maybe with my hard cock in full view, not sure what she would think, but she kept looking at it. It excited me somewhat, I had never let anyone see me with a hard on before. At least not on purpose. As I was drying my hair she looked up from my cock to me eyes, grinned and simply said "Nice". Soon we were up in the game room. I noticed she locked the door when she came in. Me in sleeping boxers and Jen in a thin white night shirt, like a T-shirt, but it came down to her mid-thighs. It clung to her still damp body a bit making it evident she has nothing on underneath. I didn't even try to hide the boner in my shorts and I noticed she glanced at it as she sat down, me noticing her hard nipples pressed against the thin material of her night shirt. We gave each other a little, maybe nervous grin as she sat back next to me and we started to watch the movie. We watched for a few minutes but found the sex scenes lacking. Jen said she had an idea and left the room. When she came back she had two of my father's porn tapes in her hands. I guess I am not the only one sneaking these! I noticed again that she locked the door. Over to the VCR she goes, I had forgotten about the tape in it, and when she ejects the tape and sees what it is she just looks back at me a grins. In goes the tape she picked. The tape was a bunch of shorts of a guy and two girls. The girls get it on with each other as well as the guy. I had seen this one and it was hot, but I did have a flickering curious thought why Jen had chosen it. We settle back to watch and that is when I find out that Jen likes to talk a bit dirty. She is commenting the whole time about how big the guys' dicks are, how good a particular act must feel, how good looking the girls are and how she would love to do what they were doing. Fuck, that made me hard as rock. I had not really noticed, but I was rubbing my cock through my shorts. Jen had put her feet up on the coffee table, knees bent, her legs spread wide enough that her night shirt now slid up to about her hips. Her left knee was touching mine and it turned me on. Jen's hands were in her lap and I could see her fingers dipping lower and taking their time coming back up. I could not quite see her pussy from my angle, but I could see enough and it was driving me crazy. At the end of one scene she looks over at me to say something about the cum shot. Hands busy in her crotch and she sees me massaging my cock. Jen looked down, I didn't move my hand from my cock and just kept going, she watched for a moment and then looked up at me and asked if she could watch me! I thought she meant like I was doing, but then she asked me to, "take it out". I hesitated for just a moment when she added I could watch her as well and she whipped of her night shirt. I yanked my shorts off in a flash. We sat next to each other watching for a few moments when Jen, ever the creative one, had an idea so that we could see better. She grabbed some of the large floor pillows in the room and tossed two to me and kept one. She was sitting by the arm of the couch and propped herself up with the pillow facing me, legs spread wide. She motioned for me to do the same using the pillows. There we were facing each other, everything in view, masturbating together. God, I was so excited. I had never masturbated with anyone before. Outside when I knew I couldn't get caught, but not in front of another person. I found it exhilarating. My eyes glued to her fingers working their magic on herself and she glued to me doing the same thing. Thankfully, I had learned some self control from all my jerking off - I liked to bring myself to the brink several times before actually coming - and I knew how to stop an orgasm from coming too soon. I needed that now or I would have shot off immediately. I wanted Jen to watch me stoke my cock and play with my balls, to show her my cock, to see the precum oozing down, to finally watch me cum. I loved the site of her fingers sliding in and out of her pussy, another finger rubbing her clit. At one point, she pulled her fingers out and sucked them clean - something I learned right then makes me crazy it is so incredibly hot! I seen it on porn films, but in person was something else. She came once, but wasn't done and after letting her swollen pussy rest a bit started again, in earnest. Jen was vigorously fingering herself with two fingers, the third gliding across her puckered asshole wet with her juices. The other hand rubbing her clit quickly. The site of that was all for me and I shot a huge load, for me at the time, all over my stomach and chest. That did it for Jen and she bucked her hips in the air to meet her thrusting fingers and groaned loudly as the orgasm hit her. Even though I had just cum, my cock buzzed a little as I watched her suck her fingers clean. She saw me watching and twinkled her eyebrows at me, a twinkle in her eyes. We both lay back panting, sweaty, smiling at each other. I still remember what she said as she lay there, "that was fucking great". I couldn't have agreed more. That was not all the masturbation fun for that evening, but this is already too long. I will continue in part 2.