Increasingly horny for my beautiful sister 1° part

Continuing the story from my previous posts of that beautiful period that I was the voyeur with my beautiful sister this is another beautiful story that I tell in this post about that beautiful period of me voyeur with my sister = A Sunday in late summer in September (I think the Sunday following that of the beautiful story of my post preceding this "A very good view 4") i was at home and it was afternoon and my parents were not there :-P and there was my sister with her boyfriend who they were on the sofa in our dining room with the TV on and they were a little lying down and obviously :-P a little hugging on the sofa while they were watching the TV... , I couldn't be a voyeur... :-P, anyway my sister was wearing ( much for change :-P) a nice yellow-white-cream tunic for the house :-P and bare legs and bare feet with low clogs while her boyfriend was dressed in normal clothes (they had lunch away from home and, when they returned in the afternoon at our house my sister, as her habit :-P, she changes her clothes for to go out with a tunic for the house :-P) then, after i having scrutinized the nice apparel for home of my sister :-P I go to my room and I sitted to the computer, after a while there are noises from outside in the street, so I leave my room and i go to the dining-room and i tell to my sister and her boyfriend that they are doing something in the street (a parade a demonstration square stuff like that...) and I open the diningroom's balcony and I see from our balcony people on the streets, then I go back inside and my sister and her boyfriend are still on the sofa, so I go in my room and after a while I go back to the dining-room and i see that my sister and her boyfriend are out on the balcony and I see them from behind :-P so I pause a little to see what they were giving on the TV when then I turn back to the balcony and I always see my sister and her boyfriend both from behind and obviously I notice mine beautiful sister from behind with her beautiful bare legs but above all what I notice the most at that moment are her beautiful legs bare below her tunic and especially in that moment her beautiful naked calves who they were beautiful curvy and tough :-P with the addition of her beautiful soles of the feet (bare) because she leaned a little on the balcony's railing and therefore she had a little flexed her feet on low hooves mmmmmm :-P (but at that moment also when her feet were placed normal they could see well her nice tough legs and her nice tough calves) and so, of course, to me she immediately gets the hard cock to the maximum, then her boyfriend says "what do we do, let's go down a bit?" and my sister says "what a bummer! I don't like these things, these things they bore me..." and she said it with a bored and tired voice and also a little warm :-P that is with a warm voice :-P and I have I immediately thought within me that my sister did not want to go down but wanted to shut herself up a little in her room with her boyfriend and probably (or surely :-P) she wanted fuck a little with her boyfriend given the sunday's atmosphere ... :-P (and also the absence of our parents :-P), so my sis almost "force" me to get off the house :-P :-P :-P for to go and see the things they were doing on the street and i without delaying too much I got off the house :-P. After being a while on the street and saying goodbye to some acquaintances I started back home because my cock was always hard thinking about my beautiful sis that was fucking her boyfriend and then I entered in our building and, went up to our floor, I approached in silence front our door and I tried to hear the noises inside our house because as I said at the beginning of this story our parents were not there (they would return two days later for work reasons) and therefore I did not hear any noise not even that of television anymore :-P but I thought that my sister couldn't makes the love into her room because she could have the "annoying" thought of me that I could come back at any moment but, as I said before, my sister had me almost "forced" to leave the house for to go and see what was being done in the streets, so I open our front door and it was almost dark because darkness had almost fallen :-P and so I turn on the corridor light and then, walking into the corridor of our house, I begin to see the closed door of the my sis's room from a distance and under the thin crack of the bottom of the door there was a pale light on :-P :-P :-P (that of her desk at the computer :-P) and while I continued to wander around the corridor of our house without approaching the room of my sis and then I hear the voice of my sister who calling me and with a normal and quiet voice she tells me "Ehy, it's you?" and I answer to her "yes it's me" and i add "dad and mom will come back tomorrow or the day after tomorrow ..." :-P :-P :-P, so, after a few seconds, I am going for to push down with my hand the handle of the door of my sis's room and I do it and the door it was closed with the keys :-P :-P :-P and my sister immediately tells me always in a normal and calm tone "we are seeing our things on the computer... enter in later..." and I answer to her (in a normal voice) "ok quiet, I'm in my room" and in the meantime my cock is getted bigger because I was thinking at that moment if my sister and her boyfriend were inside the bed doing a little the love i.e. a little and without making too much noise :-P :-P :-P or in any case they were a little flirting on the bed because, as I said before, the door of the room of my sis was closed with the keys: - P :-P :-P so i in my room i had yes the cock nice hard to the maximum thinking that my sister had locked herself inside her room with her boyfriend :-P :-P :-P, but I didn't feel so much the strength to masturbate because anyway I should have done it in silence :-P and so I turn on my small TV in my room and turn the volume on with a let's say normal tone to make them feel that I was watching TV anyway and I didn't think about how they were doing good because they were locked into my sis's room :-P :-P :-P, so I go to the kitchen to get me something to eat for dinner and then go back to my room and I thought in that moment there who my sister and her boyfriend were always there in my sis's room locked with the keys :-P :-P.-P and therefore no normal dinner for me :-P, so I closed in my room and lay in my bed with the TV on and after eating something I fall asleep a little and always having a nice hard cock :-P and so I rub it a little but without to masturbate completally, so after some time (1 hour pheraps 2 I don't remember well however it was late evening and therefore considering that when I got off the house it was still sunny afternoon and my sister and her boyfriend they had already closed into my sis's room with the keys :-P :-P :-P and therefore from the sunny afternoon until late in the evening they were closed into my sis's room with the keys :-P :-P :-P) so I hear the noise (light i.e. weak :-P) of the keys of my sis's room that turned :-P :-P :-P and then my sister and her boyfriend they had left my sis's room and they went near the door of our house and greet each other using a little with the usual sweet words :-P, then my sister comes behind the closed door of my room and, without entering, she asks me (always with a normal and serene tone :-P :-P.-P) "but you what do you want for dinner or you do yourself already done something?" and I answer to her "yes I have already done something no problem..." and she says "ok I do myself something and then I go to sleep.. night!" and then I hear the noise of my sister in the kitchen and then she goes back to her room and she too turns on her little room TV and then, after a while, she turns it off and then in short we sleep :-P. the next morning, my sister, early in the morning, she had to go down to do some errands for her, however during that day i and my sister we were still without our parents (who would come back the next day) I saw my sister who had no particular expressions or she spoke to me with tones a bit like that due to the fact that i had "causally" :-P observed live i.e. live :-P her actual time that she had remained inside her room with her boyfriend and with the door closed with the keys :-P :-P :-P for a bit of time i.e. for some hours(!) and therefore for me this beautiful situation of my sis had made me very horny also because it was the first time that I had found myself in the middle of this beautiful situation of my sister, that boyfriend was not her first boyfriend because I had already seen several previously (i.e. the ones I had seen then some other boyfriends who knows :-P) anyway for me there was been this other beautiful situation of me voyeur with my beautiful sister as indeed i've told in this post :-P.