My Friend, Her Sister, and I Alone

I was over at my long time friend's house hanging out (She's a girl). I have known her forever. We will call her Julie. She and I were 17, both going to be a Seniors in high school after the summer.  She was also rather attractive. She and I were there with her younger sister who was 16 and just as good looking as her sister, if not better. Her sister was the kind of little sister that always wanted to be a part of what her sister and I were doing. We will call her sister Alex. Their mother was out and the three of us were alone in the house. Alex was really annoying her sister for one reason or another, so to get back at her, Julie whips out this picture of Alex stark nude, posing with her arms flexed, which she preceded to show to me. I blushed, because Alex was standing right next to me, looking also at this picture that featured her HOT pussy with a little patch of blond hair and a nice long slit, along with beautiful mid-pubescent breasts and perky nipples. Alex was embarrassed beyond words. She almost began crying. She proceeded to tell her sister that it wasn't fair and that she now had to get naked so that I could see her also. I obviously did not protest to the idea. Julie told her sister no way, but I didn't want it to end right there. I told her that if she and her sister both got naked, I, too, would get naked. They both said that they had never seen a penis before and I said that I had never seen a pussy before close up. First, off came Julie's shirt, and then her tight pants, revealing skimpy panties and a bra covering her nice breasts. Then Alex and I began stripping until we were all in our underwear. We decided that on 3, we would reveal ourselves. Soon, I was standing there admiring two naked girls that I had known all my life, and thought were attractive. Julie had amazing breasts and pussy and nicely manicured pubic hair, but I found myself admiring Alex. By now, of course, I was naked with two girls looking at me and my massive hard on (at least it felt massive to me). Before long we decided to allow each other touches, and it wasn't long until I had two fingers in Julie and two fingers in Alex pumping in and out, while they both grabbed my cock. I asked if they had ever masturbated, and Julie said yes while Alex sort of avoided the question. Julie and I explained it. Alex said that she wanted to feel an orgasm. I'll never forget it. I asked Julie if she ever saw a guy cum, and she said no. I suggested that I bring Alex to cum while Julie gave me a hand job. It was incredible. As I was about to explode, I noticed that Julie had her face very close to my cock as it was throbbing. I was busy on Alex, rubbing her clit while inserting my fingers in her. As I had never tasted a girl, I would often switch hands and suck on her pussy juice. First I blew in Julie's face, and noticed that she positioned herself so that she caught most of it in her mouth. She swallowed it all and said that I tasted amazing. Then I felt Alex's pussy tighten on my fingers and I knew she was close. She let out a moan only fitting a first orgasm ever. After, we all sat up and talked about sex and our bodies. I was allowed to lie down and spread both of their pussy lips, my face only inches away, admiring their bodies, and they both closely felt my penis and balls. Alex said that she wanted to try what Julie did before and gave her first hand job ever. Incredibly, she seemed rather proficient in this art, and I shot a nice load of cum onto her hands. She asked her sister if it tasted good and Julie said yes, so she licked her fingers. I stopped her and licked some off myself. By now, my cock was pretty tired and sore, and we decided to put our clothes on and not tell anyone about this encounter. Obviously, I wanted to start going over to their house as much as possible from then on. We would wait until we were alone and perform more sexual favors involving mouths, sucking, licking and increasingly complex positions. All too soon we began getting involved with our separate circles of friends and really no longer talk. However, I will never forget my first time, and I don't think either of them will ever forget theirs.