Junior year had started, I would turn 17 soon, I was excelling at school and sports, and life was great. Except for one thing. As anyone knows, everything seems so fucking important and so overblown in the life of a teenager. You take every breakup so hard, every kiss or glance thrown your way to mean so much, and every loss to mean the end of the world. And over the summer I had lost the love of my life...my beautiful sister.And it all happened due to that mother-fucker, MF Mike himself. He had been dating my sister for months now. In her mind they were going strong. But I had started to hear things around school. Mike was becoming a popular guy, as he was dating one of the prettiest girls in his class. He was a musician, he was getting older, he was becoming that artsy type guy that girls that age swoon over.I had started hearing rumors that he had his eye (and maybe his hands) on a couple other girls. I had no proof, but the sheer speculation pissed me off. Not only because he was fucking over MY GIRL, but that someone was hurting my sister...the girl I looked after and protected.Late in the fall, near the end of football season, Britt got really sick. Nothing serious, but something like mono (they never really gave a diagnosis). She missed two weeks of school, went through multiple courses of antibiotics, and was essentially bedridden for a couple weeks. By the weekend of my last football game she was getting better, though she had still missed school. She was really upset that she had to miss my game. However, she was also a bit excited because while my parents and I were at the game Mike was going to sneak over so they could hang out for the first time in weeks.The game went well, we won, I made a couple plays, so on and so forth. A few buddies and I went out for wings after the game, chased some girls, did the usual before I headed home. As I pulled in the driveway I was a bit surprised not to see Mike's shitty ass Jeep in it's usual spot hidden down the street.As I went inside the house something seemed strange. The lights in the entire house were out, which almost never happened. Our parents had come home earlier, and it was no surprise that by this time they were in bed. But Britt should be up. I was confused as I walked by her room, the door swung open, the blackness filling the room with no one in sight."She couldn't have gone out with that idiot," I thought to myself, "mom and dad would fucking kill her." I started down the steps to my basement room before I realized I could hear noises in my room. "What the fu-" I was thinking as I got to my room and saw brittany lying on my bed, her head buried in her arms as she cried.Before I got to her she looked up. "Sam oh my god I need you, I need you!" she screamed through the tears. "That....that ASSHOLE, th-th- that asshole Mike!." That's all she could get out.I reached the bed and hugged her, cradling her in my arms. "What happened Britt?"My sister launched into a long story...while she was sick, Mike started hooking up with this other girl. He had to live his life, he had to do this, blah blah blah Mike's a fucking asshole. I did the best I could reassuring her, telling her she was an amazing girl and that she deserved a better guy than Mike anyway, that things were going to be okay, and so on and so forth.It felt so good to hold her again. I remember feeling like things were right again, feeling like there was no place I would rather be than with her right now...taking care of her and holding her tightly in my arms."Can I stay down here with you tonight Sam?" Britt asked. "I just really really don't want to be alone tonight."Of course babe...anything you want. I'm here for you."I was ecstatic at this. We reclined back on the bed and began to talk more, catching up with each other...talking about the football game, life in general, how she had been feeling. She said that she felt a lot better and was getting back to normal. We talked about a couple of the girls I had dated. I mentioned that none of them got close to matching how beautiful and wonderful she was. I told her how much I missed her...how much I missed us...We were lying face to face, only a few inches between us and my arm slung over her. She told me that she missed us too. And like a magnet was sitting between our faces we kissed each other...for the first time in months. We kissed again lightly. I pulled my sister a little bit closer to me. We kissed again, this time with some tongue."I don't- I don't want to...um, take advantage of you like this..." I stammered.Without answering Britt pulled her body more tightly against mine and kissed me again, with more tongue and more force this time. Before I knew it, we were passionately making out. I held my sister tight and kissed her deeply and hardly. I kissed her like it was the last time I ever would. Over the last few months I had learned what it's like to love and to lose and I wasn't going to let that happen again without loving her the best I could.She pulled my shirt up over the head, cuddled against me more. We continued kissing as she jumped up and straddled me. She pulled her shirt and bra off without breaking our kiss for more than a second or two. Those wonderful breasts were again right in front of me. I'd missed her so much, but I'd definitely missed her beautiful body! She removed both of our pants...mine revealing my rock hard cock that was more than ready for her.Once we were lying on the bed naked together she continued to straddle me. We kissed a little longer, our bodies close and keeping each other warm. By the time she broke the kiss we had been kissing for close to 30 minutes."Are you sure you want to do this?" I asked."Yeah...." she nodded, a sadness in her eyes. "I'm so sure."She reached behind her and grabbed my cock. She lifted her ass up and held it to her pussy. She lowered back down, my dick easily sliding into her pussy which was soaking. She slowly but surely rode me, putting her hands on my chest for support and letting out occasional soft moans that were simply beautiful. She was really working it. I don't know where she developed her skills but she was different than before. I had to block the thought that maybe she learned some of this with Mike.After some time, she leaned back and continued to ride me while supporting herself with her hands on my thighs. Her body was simply stunning at this angle. Looking back after all these years, no image from any of our times together is singed into my memory more than this view. She had her eyes closed as she rode me, speeding up. Her perfectly flat belly was bent backwards, her back arched. Her breasts were perfectly round and pointing toward the ceiling. Her thighs flexed and extended seemlessly as her pussy pulled at my penis, getting ever so close at the top to pulling off at me before lowering back down on me and taking every inch I had.After a few minutes I was going crazy. "Britt I'm gonna cum...""Wait...I want to cum together. Just hold out...wait for me babe," Britt replied."I'll try" I thought but didn't say outloud.Britt was now riding me fast and hard, moaning loudly and more forcefully. I flexed my leg muscles and tried to hold the cum back. She was driving me absolutely crazy....I held out and held out.Finally with one big loud scream she dropped on top of me, her cum covering my cock. I began pumping into her, keeping things going while I shot load after load into her...cumming deep in her pussy over and over. She laid on top of me, worn out.We lay there for several minutes before kissing again. "Thanks Sam...I needed that-needed you...so bad."We continued kissing. Kissing led to touching. Touching led to hard-ons. Hard-ons led to us fucking two more times that night, with her doing reverse cowgirl, me fucking her on top, anal, all kinds of things and whatever our little hearts desired. We were lovers again. By the morning things almost seemed back to how they had been.The next few weeks were much better for us. We did talk and decided to take things a little slow. Certainly both of us had been vulnerable that night and emotional and we didn't want to just jump back in and go crazy with things. We had to plan and had to be smart. We also had to figure out what the FUCK we were going to do in terms of long terms plan. Surely this couldn't go on forever, right?We began kissing more, went on a few dates, and had sex a couple times over the next few weeks. We started talking more and getting closer again. Britt was starting to feel better, and though she did have a couple episodes were her stomach was upset, was good to go out on weekends and go back to school within two weeks of our big reunion.We began to do a much better job at hanging with friends/ hanging out with/fucking each other over those weeks. Things were going great.At least until the day that changed both of our lives forever. The day of the call. I had a group project to complete. I was at a friends house working in the group when I got a phone call. It was Britt. I excused myself and walked outside to take it."Hey babe...what's up?" I said cheerfully.Silence."Britt...are you okay?" I asked again.Thinking her phone was probably fucking up I went to put mine back in my pocket. Finally I heard her voice."S--Sam?" I put the phone. "Sam I...I took a pregnancy test today after school. I...I think we're in trouble here."