Not in Vitro
by Grumpy
Copyright© 2025 by Grumpy
Erotica Sex Story: A couple struggling with infertility decides to use a sperm donor, and so the erotica begins...
Caution: This Erotica Sex Story contains strong sexual content, including Ma/Fa Mult Consensual Swinging Masturbation Petting Pregnancy Voyeurism Size .
The beginning-
Kay and I had married during our senior year in college. After establishing our careers, she as a nurse and I as an architect, we decided it was time for a family, but nature decided otherwise.
After trying for two years, we both subjected ourselves to a battery of tests at a fertility clinic. When the tests came back, Kay was normal in every way, but I was extremely low in active sperm count. It was possible for me to conceive, but the odds were overwhelming.
We discussed the sperm bank and in vitro fertilization route, but the hassle and procedures needed were a turn-off. We then spent some time discussing the virtues of adoption vs. no family and decided we definitely wanted a family but wanted control of the genes. We wanted a baby that looked like our child as closely as possible.
We discussed possible sperm donors and couldn’t decide. We were back at the sperm bank option when we met Beth and Jack.
Jack and I could have passed as twins, plus he was almost in the genius category (he was quick to let everyone know he had a superior intellect, which was a turn-off for both Kay and I). Drawbacks aside, it didn’t take long for us to decide.
It didn’t take long to recruit Jack. When the subject was finally broached, he didn’t hesitate to accept. Jack didn’t want Beth or anyone else to know. Beth was easy; I would always be Jacks alibi. If Beth questioned his absence every month, I would be able to assure her that he was with me.
A semen sample and other tests showed that Jack had an average sperm count and was healthy.
Beth frequently traveled, which occasionally resulted in Jack spending the night during Kay’s most fertile period. Although it cramped our relationship, it did increase the possibility of conception.
On those nights when Jack stayed over, Kay and Jack would get together shortly after he arrived, again just before we retired, and once more before we left for work.
When Beth was home, Jack would think up an excuse to be at our house. Sometimes he would tell Beth he had to go into work early and would stop by before we left for work. Sometimes he would meet Kay during her lunch period. And at other times, I would call and leave a message that I could use his help that evening if he was available. He made sure he was always available.
The first time Jack arrived to ‘ help me out’, the smug look on his face almost caused me to cancel the whole affair. Kay recognized what was occurring and after a private conversation, convinced me to continue with the agreement.
That first time, I went to a bar and had to call a cab to take me home. Kay was upset and let me know it when I finally arrived home. We had agreed that I would make love to Kay after each of the visits to mix semen so absent a DNA test; we could assume the baby was ours. I was in no condition to do anything except pass out.
The next day, Kay was waiting in my office when I returned from lunch. After the shock of seeing her there subsided, Kay closed the office door, turned the intercom off, bent over the desk, and flipped her uniform up. She wasn’t wearing any panties, and it was obvious that I wouldn’t be the first that hour. She had cleaned herself as best she could, but semen had leaked while she was waiting for me.
“We’ve got to hurry. I’m going to be late getting back to work.”
I hesitated, but Kay’s smooth round ass and long slender legs soon had me ready to go. I slipped in with little resistance. She was especially slippery, but after only a dozen or so strokes, I emptied myself in what had been my exclusive playground.
“Honey, you’re almost as fast as Jack.”
“I’m sorry. I don’t know what caused me to cum so fast.”
“You had better be ready for some serious loving this evening. I’ve got to go.”
Kay pulled panties and a panty liner out of her purse, put them on, gave me a quick kiss, and was out the door. I thought about a bar again but knew that was not the answer.
That evening, after Jack arrived and Kay and Jack retired to the guest bedroom, I stood by the door and listened. There wasn’t much conversation, but it was obvious when they were engaged. Jack was grunting on each stroke, and Kay was unusually quiet, not like she was when we made love.
Within a couple of minutes, the grunting stopped, and I heard Kay ask, “Will you be able to go again?”
“Give me five minutes. It would help if I had some encouragement. Will you let me pull the bed sheet down?”
Kay must have consented to showing her nude body.
“Damn, you have beautiful tits ... I haven’t seen a body as beautiful as yours since college. Not even in Playboy.”
“It’s obvious you’re ready again. Let’s do it so we can all get some sleep.”
It was definitely soothing to hear Kay’s businesslike manner; completely different from the Kay I knew when we made love.
I listened to the grunting again, although it lasted much longer this time.
When they finished, there was some conversation about when they would get together again. Jack assured Kay he would be around at about 6 the following morning and again at 8 tomorrow evening.
I hurried back to the living room, and when Jack came out, he had a swagger and smirk on his face.
“Jack, this isn’t easy for either Kay or me, so it might be best if you could control your attitude.” He became more contrite but wanted to talk about Kay. I cut him off and directed the conversation to safer subjects while at the same time hinting it was time for him to leave.
As soon as the door closed, I headed into the guest room, to find Kay with a pillow under her hips and knees drawn up.
“He makes me feel like a slut. This had better work, or I’ll never forgive myself.”
Even dripping someone else’s semen from her vagina and with matted pubic hair, she was still the most beautiful thing I had ever seen.
I gave her a long kiss and snuggled close to her as she began to cry. I could do nothing but hold her and tell her how beautiful she was and how much I loved her.
Soon, Kay was responding to my soothing words.
“It’s time to give me some loving, sweetheart. I want to feel like a lady again.”
I started kissing her eyelids and worked my way down her face, neck, and breast. I kissed her belly button and caressed her inner thigh but didn’t go to her private parts. When we were both ready, I positioned myself between her now-open legs and took a few seconds to look at her as she lay there. Even with the moisture/cum, she was so beautiful, with small, well-formed labia, light pubic hair, and slim hips. Her labia were starting to gape somewhat as she continued to respond to my hands on her legs and stomach.
When I entered her, she started acting like the Kay I knew. She moaned and pulled my head to her, giving me a long kiss while I stroked.
“I love you so very much; you do make me feel loved and appreciated.”
She then closed her eyes and held me close. I could feel her nipples become even harder and was presently surprised when she started climbing the slope quicker than I had anticipated. The low moans increased in frequency, and soon she went almost rigid, and I could feel her vaginal muscle contracting. That was all that was needed, and I came almost at the same time.
Four months later, she still wasn’t pregnant.
“Well, dear, Jack doesn’t seem to be helping; I think it’s time to re-visit the sperm bank.”
“I told Jack that we had decided to go the in vitro route and that, while we appreciated his help, we wouldn’t need his services anymore. I wish now I had told him after the first time. He always made me feel cheap, like I was a whore.”
“Shall we make another appointment at the fertility clinic, or do you want to meet my friend?”
“I’ve met someone at work, a patient with a broken leg that needed surgery to repair. He meets our criteria, and I was very impressed with his demeanor. I would like you to meet him, and if you agree, I would like to give him a try.”
“It’s your call, sweetheart.”
We met Dave at a local restaurant, and I was immediately impressed. He was 6 years younger than Kay and me, had the physical characteristics we were looking for, and was well educated. Dave was married and seemed to have a stable relationship.
He was perfect for our project.
He shocked us when we started talking to him about our needs and politely said he could not participate.
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