When i got home from work my wife Kelly told me that her sister Brittany had called, she said my sperm sample was really strong and that she was ovulating. she wanted to cum over today to give her another sample, today would be great since Mark(her husband) was gonna be working late. so i showered and went over, i didn't tell my wife that Brittany had given me a handjob to get the last sample but for this one i figured we would be going to a clinic so a HJ probably wouldn't happen. when i walked in the door to Brittany and Marks place i found Brittany in the kitchen coffee, we made small talk and i ask if we were headed to the clinic. she had a little bit of a nervous laugh and said that her and mark could never afford something like that and that me and her would have to do this the old fashion way! i was shocked to say the least, my wife's sister had just said that me and her would need to have sex. i always thought Brittany was hot and getting a HJ was like a dream cum true but i never thought this would happen. i asked her if she was sure this would mean we would both be cheating on our spouses. she said don't look at it like cheating, we not doing this for love or lust but to just make a baby, that got my dick hard. so i agreed and we went into the bed room, once in there she took her pants off but kept her shirt on since this was just to make a baby and that didn't involve her breasts. i took my pants off and got on the bed, then she started giving me a HJ to make sure i was nice and hard. when i was ready she slid down on my dick, she was so tight that i almost came. she told me sorry but i was so much bigger then mark and she needed to go slow. after a few minutes or grinding she actual came, i could tell she was mad at her self for it. since we were trying to stay professional about this her cumming made her feel guilty, i fucking loved it. i never really liked Mark so fucking his wife in his bed and her cumming was all really turning me on. we decided that the best position for me to get as much of my sperm deep inside of her was doggy so that's what we did! i pound her pussy like a champ until she came again and then i let loose like a fire hose and filled her pussy up with my sperm. after we both caught our breath she said she was gonna be ovulating tomorrow ant that i should come for one more try. i told her i would be there, god i cant wait! This is part 2 of Wife's Sister Needs My Sperm, it stars Brittany Shae and is a POV Taboo Sex Impregnation scene