My wife had told me that her friend from work, Beth, and Beth's husband Robert were having trouble starting a family. It seems Robert has a low sperm count and they both desperately want to have a child.
I told my wife that I would be more than happy to help Beth out.
My wife gave me a stare and said, "I bet you would."
"I am being serious, I would give Beth my sperm if they want a baby so bad."
My wife finally gave me a serious look.
"If you really mean that, I will tell Beth."
I told her yes, I meant it. My wife relayed the message and a few weeks went by. Eventually my wife came home from work one day and told me the news. Beth and Robert would accept my offer. This was her fertile time of the month and I was to stop by this upcoming Saturday. Of course I was told it would be very antiseptic lovemaking. Put my cock in, cum, then pull out and leave.
I went to Beth's house on the following Saturday. I was to go directly upstairs to the bedroom. Robert would not be there, in order to avoid any embarrassment of the various parties. I went inside the house and climbed the stairs. I looked into the bedroom and there was Beth, naked on the bed. The blinds were closed and all the lamps were off. It was pitch black, but I could still see her.
Beth was petite, she had short brown hair and small breasts. She did have a very cute face and a shapely ass that I always admired. I removed my clothes and stood there looking at her. I stroked my shaft and was getting a bit hard. Beth had her legs spread wide and was waiting, not saying a word.
I climbed onto the bed and got between her legs. I took my cock in hand and started rubbing the nozzle across Beth's pussylips. Suddenly, Beth reached out and took my shaft in her hand, inserting the head in place. Beth's eyes got big in the process. I don't think she realized how thick my cock might have been.
After she did this, I began to work my hips forward. Pushing back and forth, slowly feeding her my cock shaft. Beth's breathing was growing a bit deeper now. I started to feed her additional inches of my hardness. Beth had her legs spread initially, she now placed them around my waist.
We started to meet each others thrust now, I had no intention in having sterile sex. I kept pushing inside her until I was buried all the way to the hilt. I held my cock in place for the next few minutes. Beth must have wondered what I was doing.
Slowly I withdrew my shaft, holding it there for a moment, then I rammed it in as hard as I could. Beth let out a shriek, and we started to fuck in earnest. I was giving it to her hard now, and Beth met my thrusts with her own. My egg shaped balls were dancing off of her asscheeks.