My daughter isn't genetically mine. My wife and I tried for many years to have a baby but my sperm count is just too low. After 8 years we were already into swinging so we picked a man and he let it rip. I didn't fuck her during this time and they had steady sex within a month she was pregnant. She teases me that she probably got pregnant off the first squirt he was so fertile. Truth is it could have happened any time that month. When I say steady there wasn't one day I can remember she didn't smell of the guy and she would tease too walk around the house with no panties after a multiple session night so I could really get a whiff not shower until he was due to come over again that night really nasty lil slut stuff. The guy looks similar to me enough to trick the grandparents anyways and we're not going to tell her. She doesn't need to know I'm her father takes a hell of a lot more than sperm to be considered a father in my mind. My wife has made it clear that if there is to be another that it will go down with the same man again so the kids are the same genetics. I don't mind this the guy is taller and physically better off with fewer defects like bad eyes and what not. Strong sperm, bred wife, happy family not much more to say about it than that.