Cousin brothers

My sister and I were going to secondary school when it happened; she was a year younger than me but equally hot and during long summer vacations, we ended up doing what many other siblings do: having sexual relationships. We were strong in our gender; she was a brunette, thin, with good legs and breasts, and I was tall and dark-haired with a good piece and I say it with certain modesty because I don't want to brag, with black hair. But since we were in the category of lovers, the spending of time, hours together naked and having uninterrupted sex was natural and fun. There was no clumsiness, only the pure pleasure of two young healthy bodies doing what they were destined to do. We didn't use condoms and she didn't have an IUD or take pills so when we caught each other, it would only end with my cum in her mouth or ass. However, this didn't always happen and more than once I found myself in her pussy. But the curious thing was that every time I came inside her, this became more exciting, and there was something forming between us that could only be called love, the kind of love a boyfriend and girlfriend have for each other. Then one afternoon when we were together I felt so attracted to her that I told her I loved her while I was ejaculating in her vagina; she said she loved me too, and I could feel the orgasmic contractions in her pussy when my sperm entered her womb. We hugged and deeply kissed each other; this was no longer a fun sexual game, we were in love with each other now, and everything changed. My sister had never looked so beautiful, and I told her we were passionately in love, now, not just like two teenagers having sex with each other. She agreed and said it was a good thing because she was probably pregnant. It didn't take long before an EPT confirmed it - she was carrying Our baby. This only made us hotter for each other and we were having sex nonstop now, every time we had the opportunity. We had stopped going out with other people and now spent so much time together as possible. We lived with our mother, and she started suspecting that something was going on, following us with her strange looks when I put my arm around my sister. Finally, my sister and I decided to tell Mom we were in love, especially because my sister couldn't hide her pregnancy anymore. That night, she and I told her the news after dinner, that we were lovers and she was expecting. My mother's reaction was totally different from what we expected. She said she had known the situation for some time but hadn't said anything because she wasn't sure if we were going through a phase of experimentation. She said she was happy we had found love with each other and there was no reason to keep this secret between us since it was our home, we could have sex together whenever and wherever we wanted, as long as nobody else found out. To prove her point, my mother undressed herself and presented her mature body to us, asking us to undress too. We easily complied and when we were all naked, she said the best way to keep a secret is to share it, and asked me if I wanted to fuck her. I looked at my sister and she agreed easily, already sucking one of our mother's breasts. I entered her wet pussy and was finishing in her. Our mother was also fertile, and not long after this, she got pregnant too. Before my sister gave birth, we all decided to move to another city and country so nobody could know our secret. We found a nice rural house near Pichidangui in Chile and the three of us started living like polygamous lovers. I gave my sister and my mother each two children and never was happier. Maintaining our love within our family meant total happiness for us, and we'd love to hear from others who enjoy our unconventional but pleasant lifestyle.