I don't really know how to start this off but here it goes.

Right now I am 28M this happened when I was 14 or 15 I honestly don't remember. I have an older sister at the time 15 or 16. We were unseperable. One day she had brought over her bf, at the time, and asked me if we could all watch a movie, I was a shit head only wanting to play my video games, but I agreed so they had sat on the couch while I sat on the ground with my eyes glued to the screen watching the movie. While we were watching the movie my sister and her bf had been fucking behind my back, I didn't realize it at the time. After the movie my sister's bf needed to get home since our parents would be home soon.

A couple of months later my sister confided in me saying that she thought she was pregnant. Well our mom found out, I didn't tell her, and forced my sister to get an abortion. As she was underage at the time she had no choice even though she kept telling our mom that she wanted to have the baby.

A couple weeks after the abortion, my sister had confided in me once again. She was telling me that she really did want the baby but with the bf finding out that she was pregnant in the first place they had separated. Since she had no guy to go to too get pregnant she decided to ask me. I didn't know what the fuck was going on at the time but I said that I'd help her in any way that I could, thinking I could just find another guy for her to be with. That wasn't her plan though. So she asked me if I could get her pregnant and that she would do all the work. After I agreed, like the idiot that I was, she had me lay back on my bed and she took off my pants. She started sucking my dick to get it hard. After sucking for a couple of minutes she stopped she took off the pajamas that she was wearing and got on top and guided my dick into her pussy. After riding me for a few more minutes I had cum in her. Honestly I don't know if my cum worked or if I was to young to be producing the baby making sperm, I was still growing, but nothing ever came of it and my sister never tried again.

Though now that I'm writing this and telling it to other people I really miss my sister and wish we could have done it again.