OK I figured I would start over since my post have disappeared. OK I will also go ahead and say this will be long and take a bit before getting to the good stuff. So I think I will start with the first time I had sex with my sister A. No I won't post any pictures or give their names I won't expose them any more than telling our stories. If you want to call them fake so what it is you right but it won't make a difference. Now my dad was out of the picture most of my life so I grew up protecting my sisters even when they started things. In fact being the first male on my moms side of the family in decades I also looked out for my cousins too. Now just a bit of background on A while we didn't get along and mostly avoided each other she knew I would always take up for her and protect her if needed. A had been dating this guy who was a complete jerk but was her friends brother so didn't want to hurt their friendship by dumping him. They had been together about 4 or 5 months when A came home one day crying cause she saw him with another girl making out. When she got home she came straight and told me knowing what my reaction would be which was to go and whip his ass. This wouldn't normally have been an issue except I got caught and was brought home by the one of the local town cops who knew me and my mother. So since I wouldn't tell why I had jumped him cause I had promised A I wouldn't I got grounded for starting a fight. So when A found out the next day she came and apologized and said she would tell mom what happened but I told her to not worry about it. She then said she thought she would probably get back with the jerk since she couldn't really do any better and that he had only be with the other girl cause she was willing to have sex and A wasn't at the moment at least not with him. I told her if she did I would whip both of them and that she could easily do better than him. She looked at me shocked and replied no she couldn't that guys didn't find her attractive or want anything to do with her. I told that she was attractive and beautiful that several of my friends would like to ask her out but we're afraid of how I would react. She said to me yeah right you are just saying that to cheer me up because you are my big brother that I didn't mean a word of what I said that the only reason any of my friends would even talk to her is if I made them. I told her to give me a little while and I would prove I meant every word that I had said to her. She was like OK fine but if I couldn't then I would leave her alone about getting back with the jerk to which I agreed. Now this did leave me in a bind since I was grounded and even if I could get one of my buddies who had expressed interest she most likely would end up thinking I had made him go out with her. So after a while I did think if a way I mean she did look good and all but she was my sister so I spent most of the time debating how far I was willing to go to prove my point. I didn't come to exact answer until she came back and called me out but then it was more of I wasn't going to back down no matter what happened. So later when she came to me asking if I was ready I told her originally I wasn't certain but was ready to try. She then said why she knew I wouldn't be able to convince her no matter what I did. So that was why I felt challenged and was willing to-do anything to be right even have sex with my sister. That was when I told her to come on in my room and shut and lock the door which was against the rules but I figured moms not home and won't be for awhile so no big deal. Once she did I looked at her a told her that I would make her see I was honest with her but she had to do what I say and promise to tell nobody about what we did in the next little bit. She was willing to keep quiet as long as I didn't humiliate her but was reluctant to do what I said without knowing ahead of time what I was going to do. I told her I would only do what I needed to do to prove to her I meant what I said about her and that we would quit anytime she wanted as long as she admitted I meant what I had told her. At this point she asked if she could think about it for a little bit before giving me her answer to which I said of course come back if and when you are ready. It was about an hour later when she came back and said OK she would but I had to agree if I failed that she could tell everyone how I was a bad big brother and I agreed as long as she didn't tell about what was about to happen and she agreed. I got up then a told her I first needed to go to the bathroom but while I was gone she was to shut the door leave it unlocked but to take all her clothes off and get under my covers and wait until I returned. She looked at me shocked and asked did I honestly want her naked in my bed waiting for me to finish in the bathroom and I said yes. I told her if she didn't want to follow my orders she had until I got back to leave and drop the whole deal. So I left her standing in the middle of my room and went to the bathroom to give her time to either get undressed and in the bed or leave. After about 5 to 10 minutes I went back to my room figuring she had left only to be surprised by finding her in my bed and her clothes in a pile on my floor. I then told her I originally thought about calling a couple of my friends I knew that wanted her but like she had said they would have done what I said no matter if they wanted to or not so I came up with my current plan. So I then turned around and locked my bedroom door since I knew mom wouldn't be home for a few more hours and J was at a friends house. I turned back around and proceeded to strip my clothes off as well which A was like what are you doing or thinking right now. I said I am thinking I can prove you are an attractive girl and that it is only fair if I ask for you to be naked that I should also be exposed. She then says but I am not exposed I am under the covers to which I reply that reminds me you can now take the covers off now that the door is locked. She then looks at me and says you are joking with me aren't you to which I reply does it look like I am joking by this point standing in front of her completely naked. She hesitates for a moment before saying she is not sure about this and that we should probably stop now before going to far. I then quickly pull the covers off the bed and say fine we can quit if that is how you feel but first she needs to admit I meant what I told her. She then goes so that's what you are doing you figure if I get to uncomfortable or scared you can force me to agree to stay away from jerk. I then told her no that I meant to do whatever it took to convince her I thought she was attractive and wouldn't be willing to stop until then or she chickened out which ever came first. Her response was she wasn't going to chicken out and nothing I did would change her mind. So I walked over to her laying naked on the bed and started kissing her neck down to her nice size C-cup breast then taking a nipple in my mouth began ducking on it which caused her to stiffen up but she didn't say stop or try to push me away. Now while working in both her breast she began to loosen up a little bit even started to increase her breathing until I slid a hand up her leg and cupped her shaved mound. She immediately became as stiff as a board but still refused to quit or give in and admit she underestimated me. So I forced her legs apart just enough so that I could slide a finger between her nice soft plump pussycat lips and start rubbing her clit. After awhile of this she again started loosening up in fact she was getting into it and was enjoying my attention. She had in fact even got to the point that we had started exchanging passionate kisses before I again started kissing down her body this time continuing beyond her breast and now swollen nipples. I would make my way down between her legs when I found her completely soaked from what I had already done with my fingers on her clit and even a few quick not deep insertions inside her. I took a quick second to stop catch her eye and ask you wanna quit yet she was only able to shake her head slightly before I dived in using my tongue on her pushing and driving her past her first orgasm from someone else. Now once she had come back down I lined my rock hard cock up with her opening and when she said she had never I quickly said that is fine but she may feel a bit uncomfortable at first and sore after but that she would enjoy it. I told her this as I started sliding inside her slowly taking my time once I was all the way in I stopped allowing her body to adjust and for her to catch her breath. Then I started at a slow pace ducking her increasing as she got accustomed to her first cock filling her pussy. It would be long though before I was pounding her fast and hard while she moaned and writhed beneath me enjoying be ducked by her brother and cumming all over my duck pulling me over the edge releasing a full load in her now soaking wet pussy that was now for the first time cum filled as well. I then rolled of her a layer down beside her telling to just lay there a relax that she might want to wait and see how sore she was before getting up. I then asked if she still didn't believe I thought she was attractive and she said no she believed me but wasn't it wrong that what we had just done. I thought about and told her I don't know but that I had enjoyed having sex with her and that if she enjoyed it and wanted to do it again sometime we could. She said she did enjoy it and would think about doing it again and let me know later if she was willing or not. As we layed there she would ask if we did would I always be so rough or if we could try more tenderness some of the time. I told her we would do both but the reason I was rough this time was to not allow her to think about it to much until we were done she was like OK that is good but I still need some time. I told her that was fine to take all the time she needed. This whole time we later there naked I was looking at her with a little bit of my cum coming out of her freshly used pussy getting hard from the thought of ducking her. I decided if I could only have once I was going to take full advantage of it. So I tell her yes take your time deciding if you want to do this again and how much or often but that we are none done with this time yet as I get back on top and start kissing her again. While I kiss her I play with her breast slide my rock hard cock back inside her now wet and cum dripping pussy and proceed to once again duck her hard and fast to her now third and fourth orgasm before squirting another cum load deep inside my sister pussy. After we finished she laid there about 5 minutes before getting up gathering her clothes and shacking her naked ass out of my room. Just before she got out the door she looks back smiles and says we will talk tomorrow about things.