We tried all kinds of procedures, but when all was said and done, we couldn't have children. The problem was that Dan's sperm was very weak. Not non-e...istent, but just too weak to actually fertilize my eggs. After two rounds of failed in vitro that were very expensive, I was desperate for a baby.I dumped all of my grief on my sister for months. I so much wanted a child and was actually jealous of how easy it appeared for her and Brian to conceive their two children. She listened patiently and. No matter how repulsive, he was really into me. Into my body, using it, that turned me on, as it always did. He kept pumping me like a machine and I had this weird feeling building. He kept pinching my nipples and saying dirty things to me and my pussy was building to some orgasm but it wasn’t something normal, it was coming from my somewhere deep in me, it was from his assfucking me! It was so weird, at that point I lost myself and my disgust and began feeling something like an orgasm. I have been existing but only because I was too weak to take my own life. I know this letter will give you many sleepless nights but really, you were just kids who did not know better. Don't beat yourself over it.I have lived through many nights when I would think that people offered mercy to rabid dogs and hoped that my children would even show as much mercy on their father who was dying all alone in his empty house, but after some time even that hope faded. I remember, my father took my face. As I increased my tongue and finger agitation, I heard her stifling her screams.My other hand supported her quivering bottom as her hips lifted further up and me with it. I could feel the wetness flooding out between her legs and into my thirsty mouth.“I’m cumming, I’m cumming so hard,” she squealed through her hand.It was like nectar in my mouth, tasting all the sweeter for the shattering orgasm that I knew I was giving her. Her thighs involuntarily tightened on the sides of my head as another.