My first boyfriend was Jacob Mancuso, we would screw in his car or sometimes we would be alone at his house but not too often. Most of the time we did it in the back of his little Honda where it was cramped and uncomfortable. I mean, he seemed to have more fun than me and most of the time after he smeared me up with cum we were done. My neck would hurt but I told him how great I felt so I could go home and stretch out on my bed and finish what he started with my hands and a girl’s toy I got my big sister to buy for me. The few times we could use his bed was a hell of a lot more enjoyable, I even got off a couple of times while he fucked me, but not a lot. That went on for about five months and I was starting to think I could find a better boyfriend, someone who would seduce me before fucking me. You know what I mean, I was slowly waking up to the idea that sex could be a lot more satisfying if the guy took time to turn me on before shoving his prick in. After five months of practice Jacob hadn't learned how to do that. I wrote that in my diary. That I wanted to be seduced for hours before getting laid. What I didn't know was that my brother would sneak into my room when I was gone and read my daily log. I learned later that he had found it when I was thirteen and knew everything I’d written for years. He knew when I got my first bra, my first period, what I thought of Jenny Hanscom, the biggest bitch in school, Bruno Mars and even himself. He also knew when I gave up my virginity to Jacob just hours after it happened. If I had known that Seth was reading my most private thoughts and stuff I would have never, ever put in print that I thought he was hot even though he is my brother. But I did. The girls in our classes at school were always pestering me about him. 'He's so cute', 'Seth is hot!', 'Tell him I like him' were some of the more common whispers I got in the halls of school. Gradually over time I started listening to the girls and began to look at him with their eyes and was surprised to realize Seth is beyond cute, he is morphing to handsome and he is sexy, one of the more appealing boys in our grade level. That is what I wrote, that my twin was one of the more provocative boys in school and I liked looking at him when he didn't know I was. I never wrote I wanted to have sex with him, I mean, he's my brother for god's sake. I didn’t think it, I didn’t write it. Well, at least I didn't write it, there may have been a few moments of idle curiosity as I watched his tight ass or maybe even the alluring bulge of his prick. On a Saturday afternoon I was lying on my stomach in the front room, a couch pillow to cushion my breasts while I checked Facebook on my laptop. I was waiting for Clarice to pick me up then we were going to Margie’s before going to see The Martian. Matt Damon is hot and I would watch any movie he is in. It was kind of cool outside so I was wearing a pair of jeans and a pullover, both fit nice and snug on my body. I wasn’t shy about displaying my mounds and curves to boys, maybe I could attract a guy more interesting than Jacob. I was at that point where Jacob was almost history, I was looking for someone else to move into his space. Seth came into the room then stood astride me while looking down, “Whacha doin?” I twisted my head up to look at him, noticing his stance across my back, “Looking to see what that dippy Jenny has been putting on her page, that bitch thinks she is so hot but the selfies she puts up are totally stupid. I mean she doesn't even smile, she thinks she's being so fucking mysterious by not smiling.” Seth took a step back so he was standing across my thighs “I should take a picture of you from up here and post it on your page, Jenny would have to do something pretty wild to get a better shot.” “Huh, why?” My brother dropped to his knees across my legs, put his hands on the floor next to my shoulders and said softly into my ear “Because right now you look sexier than that girl ever will, even naked.” Wham! His words slammed into my ear, rattled my eardrums then echoed down my back to my ass. I'd never had a jolt like that before, it was instant, surprising and what I felt more than anything, thrilling. I had to catch my breath to keep from gasping as my back shivered. I didn't know how I should react to my reaction but I looked around again, “I look sexy?” “If you weren’t my sister I'd make a pass at you, that's how sexy you look right now.” Another thrill shook my back only that time my clit was involved too. Involuntarily I pressed my groin to the rug enjoying the pressure at the top of my pussy. My mind flooded with all the little comments and whispers I’d heard in school, 'Seth is hot', 'Seth is sexy', 'Seth could do whatever he wants with me'. I closed the laptop then rolled over to my back, my brother was still positioned over me on hands and knees. His face was mere inches from mine, my heart started thudding when I asked “How sexy do you think I am dear sweet brother?” When he answered “Sexy enough to seduce” my entire body started heating up. I put my hands on his knees and pushed them until he fell down. In one swift move my brother was lying on me, his pelvis pressed on mine. I bumped my hips then felt him return the nudge, I felt his prick growing against the junction of my legs. His eyes locked on mine as we chafed and rubbed our groins together without discretion or misgivings. I felt the corners of my mouth curl into a small smile as my brother’s eyes flickered with desire but I had to remind him, “You can’t seduce me, I’m your sister.” “Yeah, maybe, but I know for sure you have the same parts and pieces that all girls have and we could overlook the genetic connection, you know, as an experiment to see if my dick would rot off or something.” “Oh Yuk, that would be totally gross but I’m pretty that wouldn’t happen, I’m sure you’d be safe if we did it.” My mind was racing, I had a storm brewing in my stomach, Seth lying on me was beginning to burn my skin from inside out. I proposed, “Maybe we should find out.” “Right now?” As pleasant as that sounded, I told him, “You have to let me up, Clarice will be here any time now.” Seth rolled off me then stood and offered me a hand to pull up with. When I was standing in front of him I looked at his pants and saw the effect I had on him. My heart was doing gymnastics, a tornado swirled in my loins, I smiled up into his eyes and didn’t even hesitate to make an offer “Mom and Dad will be gone tonight, I can be home after the movie, about 9:30.” He accepted my offer “I'll be here.” And that was that. I made a date with my brother to fuck him and we both acted as if it was completely normal. Our twin link was working well because I knew what he was thinking and feeling which was pretty much the same as me. What we were going to do was just another extension our birthright, our familial bonds. I stepped close to him, he put his arms around me and we clutched for a few moments, giving the other a preview of how things would feel later. I liked the press of his erection on my stomach. We heard Clarice honk her horn so I had to let go of Seth. I turned to leave but he stopped me and kissed me quickly on the lips. I tilted my head back, looked into his eyes, reminded him “9:30,” then kissed him back. The Matt Damon movie was a little over two hours long but that may have been the longest movie I'd ever watched. My mind was not in the theater, it was in my bedroom with my brother. As time barely crept by, as the date drew nearer I was getting more turned on. Thinking about sex with Jacob had never gotten me so aroused, so ready to feel an erection in me. As I anticipated the evening I didn't feel wicked, nasty or depraved. Seth and I had been sharing everything we had ever since we were born. Rooms, toys, clothing, food and friends. Fucking my twin brother would be another form of sharing, another aspect of our mutual closeness, my thoughts didn’t feel perverted or wrong. I squirmed in my seat at the theater then again in Clarice's car when she drove me home. It was 9:27 when I came through the door. I didn't see my brother but I wasn't concerned, I knew he was in the house somewhere, I felt him and I knew he could feel me. I went straight to his room and found him sitting at his laptop, back to the door so I walked up behind him, put my arms around his chest and asked “What are you doing?” He tilted his head around “Waiting for you.” A strong of burst energy rippled through my womb, “Why?” Just before he stood I looked at the laptop screen and saw a naked couple on a bed. Seth was looking at porn. I watched the guy pull his head up from between a girl’s legs then mount over her then she grabbed his hard-on and pulled him to her. When he penetrated her to his balls my own pussy shivered. Seth would be doing that to me soon. My brother stood, moved around the chair then asked “Why do you think?” “You're watching porn?” My curiosity was up, “What are you looking at?” “Brothers and sisters getting it on, incest. I want to see if it's normal or how common it is.” I glanced at the screen where she was bouncing on his cock, “So what did you find out?” I was getting impatient, I didn't want to watch incest, I wanted to take part. “If you believe everything you see there, he nodded toward the laptop, every brother and sister ever born fuck like crazy for a while.” I stepped back putting a small distance between him and me “Then turn it off and turn me on.” I sat back on his bed then lay on my side propped up on an elbow while he closed his computer. He crawled up and over then when he was behind me he wrapped a strong muscular arm around my stomach and pulled me close, his erection pressed against my butt, his lips went to the back of my neck. My heart picked up a few more beats as his hands began to roam. Seth caressed my stomach and hips while nuzzling my back, working his head down until he was at the small of my back. He pulled my sweater up to bare my skin then kissed me just above the top of my jeans. His hand came back around then under my sweater and covered my stomach while I felt his hot wet lips on my back. I reached under my pullover and took his and moved it up to cover my breast. Seth squeezed it firmly then rubbed his palm over the tip of my bra, exciting the nipple beneath while I arched my back to rub my ass on his erection. He teased my tit for a moment the withdrew back to my belly. Seth put his mouth next to my ear “Slow down girl, we can take our time.” He pushed me face down on his bed then moved up to sit across my thighs. He leaned down, moved my arms so they were splayed wide then said “Just lie there and let it happen.” I had been thinking about him for almost four hours and I was ready to let it happen but I twisted my head and looked up at him “Let what happen?” I bumped my butt against his erection. Seth kissed me on the side of my mouth and bumped me back, a long, lingering rub of his hard cock on my butt crack. “Sex. We are going to fuck but before we do, I’m going to make you so hot your blood will boil.” If he kept talking like that he wouldn't have far to go. My blood was already hot, just a few degrees from boiling. I think I moaned. My brother pushed my pullover up to my shoulders then freed the clasp of my bra, exposing my back to him. He started kissing and licking every inch skin he could reach while his hands caressed my arms, neck and sides. I know for sure I moaned when he nipped my shoulder with his teeth. My heart was thudding, my pussy was throbbing and I was ready to let him in. Just about the time I was going to make a verbal offer Seth reached under me and unbuttoned my jeans. When he fumbled for the zipper the pressure of his hands against my body caused a major disruption in my breathing. He urged me to lift my hips then pulled my pants down my legs. He lifted up so he could pull them off my feet then threw them aside. I was lying before him with my sweater at my shoulders, my butt covered by only a brief set of white lace panties. He gripped my sweater then together we managed to get it off my arms. When that was gone I flipped to my back and looked up at him. While he watched with bright, glittering eyes I pulled my bra off then flipped it over his neck then held him in place with it. His eyes locked on my tits, I shuddered from the intensity of his stare. I pulled his head down by pulling on the bra then he put his mouth over my right nipple and tried to swallow it. I didn't think I could get more turned on but my temperature was still rising. He licked, suckled, nipped then pinched both nipples while caressing my skin from panties to shoulders. I felt my pussy swelling and knew I was seeping, prepared to receive him. I needed to do more than just lie back and enjoy him so I pushed him away and sat up. When he went to his knees I grabbed his shirt and pulled it out of his pants then up. Seth raised his arms and let me pull it off. The shirt joined the pile of my clothes. I didn't hesitate, while watching his broad chest and ripped abs I put my hands into the band of his pants, unbuttoned him, pulled the fly to its stop then pulled them apart. Seth stood off the bed so I went to my knees on the floor and stripped them down his legs. He stepped out of the jeans then we were again dressed alike, him just in shorts, me only panties. I stood and wrapped my arms around him and held tight while his arms went around me. My brother and I stood quiet for a few moments, letting the heat and friction of our bodies warm us even more. I rolled my pelvis against his erection, it was longer and thicker than Jacob's which caused tendrils of thrills to radiate to my womb from where it pressed on me. I reached a hand between us, into his briefs and started rubbing only the second erection I’d ever touched. Seth lifted my face by my chin and kissed me. I jerked and pulled on him while we necked with a passion I never in my life imagined anybody could arouse in me. He reached between my legs and began to rub me through the thin lace that covered my sex. I was fully aware that he was making me hotter, more turned on than Jacob had ever done. Seth had about reached his goal, getting my blood to boil. I gasped into his mouth while our lips were locked together when the tips of his fingers pressured my clit. He moved his mouth from mine then whispered in my ear “You want to fuck me Sherry? You want to take me to bed and give me everything you have to offer?” The only thing that kept me from folding to the floor was his hand between my legs. After the wild sexual shudder in my thighs stopped I stepped back, pushed my lingerie' to the floor then went to his bed. Seth shed his underwear then his erection followed the scent of my body. He lay down next to me, we were on our sides, face to face. My brother leaned his head back and looked at me from toes to head then back to the center of my being. I was watching his eyes as they absorbed what I was offering, I saw in them that this wouldn’t be just a fuck for him, he sensed and felt the same intimacy and closeness for me as I did for him. He folded over then took my left ankle in his hand then started kissing and licking the skin of my leg moving slowly higher to my knee and up my thigh. I had his cock locked in my fingers, I wasn't about to let it get away. About the time I thought he would put his mouth on my pussy he pulled up then rolled me to my stomach. He put a hand between my legs and began to rub the hot, wet sex, gradually easing two fingers between the sides of my cunt. I gurgled a cry of passion, spread my legs, arched my back and begged him to fuck me “God Seth, don't make me wait anymore!” I rolled to my back again, reached for his hard cock again then pulled him over me and completed the offer I’d made earlier. When the thick dark head of his hard-on slipped in, Seth paused for a few moments while our eyes appraised each other. He flexed his hips and dipped another inch, maybe two then pulled out, leaving me empty. He repeated the two inch fuck several times and each time he teased me that way my body got more ravenous, hungrier to swallow him completely. I was stifling from the furnace heat radiating from me, I had a hard time breathing without panting. When my brother finally relented and slammed his erection fully down my body cramped with a spasm of ecstasy, I had a first orgasm. I lifted my legs off the bed and wrapped them around Seth's thighs and held him close while my sex shivered deliciously. He paused just long enough for me to relax then he started fucking me for real. I opened my legs wider to feel his groin slapping into mine, I moved my hands to his hips and caressed his butt as we fucked. I was totally into my brother and what he was doing. I never felt like that with Jacob even on his best days. Not only was my blood boiling, my hormones were overflowing causing my body to crave evermore of what he was doing with me. Seth pulled out then pulled me up and over to lie on his stomach. I sat up across his lap then he guided his rock-hard cock back to where I needed it. I was over him, my hands on his broad chest, my hips rocking back and forth with his hands fondling my tits. When my racing blood and flowing hormones mixed into to one potent solution in my womb, I started to quake a second time. It started as a shimmy in my legs then grew into a 9.1 tremor that shook me, the bed and my brother with its intensity. I was dimly aware of a girl calling out her rapture as she peaked with a series of lightning fast orgasms. I fell down on him trying to catch cool air to cool my body. I rested my head on his chest where I could hear his heart slamming. Gradually I summoned enough energy to lift my head and smile at him, I kissed him gently then asked “What the fuck did you just do to me? I can't move!” Seth smiled back with satisfaction “We did it to each other.” I felt a flood of wetness between my legs but I wasn't sure if it was because I was so turned on, if I squirted when I came or if he had finished. I asked him “Did you cum?” He held my face in his hands and pulled me in for a longer, very enjoyable kiss. When our lips separated he said “Yeah, I think I ruptured my nuts.” Not one thought in the millions running through my head just then was to worry about getting pregnant. God, the way I felt just then getting knocked up would not have bothered me at all. I got off my brother and sat up beside him then focused on what he had between his legs. I hadn't gotten a very good look at it while he seduced me so the time was right. His half hard cock was meaty, thick and long enough to feel good but not so long any of it would go to waste. My pussy tingled again as I fingered his prick. It was lathered with cum so I leaned down and licked it clean. Seth's hips bounced when my lips sealed over the head and I polished him. He reaction was immediate and pleasing, my brother's cock began to grow again. I gave him head for couple of minutes until he had a tool to work with then went to my stomach and opened my legs. Seth mounted over me, slipped my desire back in and we started a second flight of sensual passion. An hour later he was sitting at his laptop, me sitting on his lap while we watched sibling liaisons on the monitor. Since we were both nude it was an easy transition from sitting and watching to sitting and fucking. I lap danced on him while sisters and brothers screwed each other on the internet. We moved again to his bed where we tossed, rolled, bounced, played and screwed all over his bedroom for another two hours. Seth and I fucked four times that first night and when I finally managed to crawl from his room to mine, I knew without a doubt that Jacob was history. I'd found out just how great a good sex partner could feel; that it was my brother was not an issue. The next day Seth bought a big box of condoms. When he showed them to me my stomach started doing flips again. I was ready to screw him then and there but mom was home so we had to wait. That night we fled our house and spent a couple of hours in the back seat of his Honda. After a few weeks of uninhibited sex with my twin, Seth confessed to me that he had read my diary and approached me that first night to find out if I meant what I wrote. At first I was pissed that he invaded my privacy but after a couple of days of pouting we managed to overcome my ire by invading each other’s privacy again. We didn't become exclusive lovers, we have no intention or desire to be monogamous but we don't turn down a chance to jump into bed together. Any time he wants a hassle-free piece I’m available for him, any time I need to get laid, he gets it up for me. Over time our relationship has cooled considerably, but I'm happy to say, not completely. I still keep my diary updated but I exercise a little caution, I don’t use his name in my deions of what we do, he remains anonymous in my journal. A couple of weeks ago he suggested that we make a webcam sex video and upload it to the sibling web site. We haven’t done it yet, but I’m sure it would be hot to do.