Daddy please

I have written a couple of stories, and this one is taken from an account about 10 years ago when my wife then was 42, we just had our first child after 18 years of trying qe stepped into the sharing life style and we both loved it, anyway this takes place well after our child is born and her dad comes for a summer visit. I worked second shift in a manufacting plant in maintenance and sometimes I wouldnt get off work till around 2-230 because of break downs. Anyway this one night I called and told my wife I was gonna have to work late because of a machine that was down and we had to have back up by Monday morning and this is Saturday night. Well the parts went in quickly and the machine was up in no time!! So I was able to leave at regular time 1030. Now we live on top of a mountain in Tenn and it is very secluded except for my parents next door. When I got home the house was dark nothing out of the ordinary, so when I came in the house through the garage I heard low muffled moans I thought man the wife is using her toys and has the bed door shut so not to wake her dad and our child, when I walked down the hell I saw that our door was slightly ajar so I almost walked right in, but stopped to make out that my wife wasnt alone!! I strained looming through the crack and about fell in the room!! It was her father and he was long stroking her from behind and she had her head burried in the pillow to keep from waking our child, i watched for a few minutes and watched as he pulled out of her and she turned over into her back and said to him give it to me like you did when no was thirteen, and can i say I was quite impressed with his size and girth!! She lives big cocks and his was ranking in the top three, and what made it even hotter was he was uncut and wasnt wearing a rubber!! I watched as he fucked his daughter my wife for almost an hour, before he said he was gonna fun, and she said dont pull out daddy give me your sperm make me pregnant!!! And with that I got to witness him tense up and fill her with his seed. Now I backed away and slipted back to my car and drove off and waited for about an hour then came home like nothing was up. When I got into the bedroom you could smell sex in the air I showered and crawled into bed I reached for her pussy and felt it all matted and wet with his sperm. I just curled up behind her and went to sleep, this went on for the summmer I never let her know I knew I would often sneak home early and watch them, then around october she told me she was pregnant, now what is the catch here is I am fixed after our first so thats when she fest up and told me about her and her dad, and how they have been sexual lovers sinse she was 13 and now she is gonna have his baby, i didnt get mad I found it extremely hot so she had the baby I invited him to come stay and help with the baby he knows I know and now he and I do her together as a happy threesome.