Breeding my young sister-in-law

My wife sadly can't conceive a child of her own, so she suggested that I impregnate her 18yr disabled sister. I agreed.

Years ago my wife and I found out, after years of trying, that she couldn’t have children and she’d never be able to have one.

This broke both our hearts as we both desperately wanted a baby, and it was harder for my wife because she was a part-time midwife delivering other people’s babies, knowing that she could never have one.

We thought about adoption but that just wouldn’t be the same, and then we thought about a surrogate, and we tried to find one but after nearly a year of trying were unsuccessful and we were running out of money and options.

We were about to give up and just try to live with the fact that we’d never have a baby, then one day my wife came up with a rather disturbing suggestion, “What if we use Kelly?” she suggested.

Kelly is my wife’s 18 year old sister, she is mentally and physically disabled, my wife and I had been taking care of her for many years since their parents passed away, she’s a lovely girl but not all there, if you know what I mean, and Kelly is a beautiful young girl by all accounts.

“What do you mean?” I asked.

“Kelly, she can have the baby for us.” She said.

“What? That’s insane.” I replied.

She went on to explain her idea, that despite Kelly’s disabilities she was still physically capable of conceiving a child, and that by getting her pregnant the baby would be my own flesh and blood, the baby wouldn’t directly be my wife’s but as she shares the same DNA with Kelly it was close enough, “She can give us what we both want. You just have to get her pregnant.” She said.

I though the idea was stupid at first, wrong, immoral, that Kelly wasn’t capable of understanding what would happen to her…. But like my wife I also wanted to child of our own, and I was desperate enough to agree, “Okay, Let’s do it.”

A few days later, in the late evening, after we’d finished out meal, my wife took Kelly upstairs to give her a bath, then a short time later she called me up.

I went in to our bedroom and saw my wife on our bed with Kelly, and they were both naked, I’d seen Kelly naked many times before when I had to clean and dress her, but this time it felt different, because I knew what was about to happen I looked at her laid on the bed, sucking on her thumb, her small petite body all clean and fresh, her cute c-cup breasts and my wife must have shaved her because her pussy was hairless.

“Ready?” she asked.

“..Yes.” I replied, as I slowly undressed whilst staring at Kelly.

My wife moved Kelly to the middle of the bed on her back, her bum almost at the bottom of the bed and her knees lifted up, swinging side to side and open and closed in a childlike playful manner.

I approached the bed and kneeled on the bottom between Kelly’s legs, and I placed my hands on her raised knees, “Hey darling, how are you doing?” I said to her in a playful tone, like a parent would speak to a baby.

Kelly smiled but kept her thumb in her mouth.

I rubbed my hands up and down her legs, feeling her young silky skin and firm curves, then ran my hands across her thighs, her hips, up her slim body and cupped her small breasts in my hands, “You’re nice and clean now. You look beautiful baby-girl.” I said.

I leaned over her and licked her left nipple with a snake like curl of my tongue, while putting my hand down between her legs and rubbing her soft pussy, “Mm – You taste nice.” I said, with my cock now fully erect and ready.

Kelly didn’t understand what I was doing, she thought it was just a game we were playing, and mostly she remained still and showing very little emotion of any kind at all.

My wife shuffled behind her and placed the back of Kelly’s head on top of her knees, and she stroked Kelly’s hair, “Come on, let’s do this.” She said to me.

While my wife gently held her down, I ran the tip of my cock up and down Kelly’s soft and now wet slit and got it in to position, “Do it.” My wife said, eager for me to impregnate Kelly.

I pushed my hips forward and after meeting with some resistance from her hymen, it split and my cock slid inside of her, “Ooooggh.” I gasped, It slid inside about an inch and I could feel the tightness of her virgin pussy compressing around my hard shaft, “Oooh wow.” I gasped, I hadn’t felt a pussy that good in years.

Kelly winced, her legs jumped in the air for a moment when I split her hymen and she let out a short stuttered moan, “Uh-h-Uh.”

My wife smiled, “That’s it…” she said, she had desperation in her eyes and wanted me to continue, “…Keep going.” She added.

I continued to slowly tap my cock inside Kelly’s pussy, slowly inching my way deeper and deeper inside her, I was about 3-inches in when I placed my hands on the bed at her sides and began to pump her virgin pussy, thrusting in and out of her, watching her small breasts wobble around as her eyes squeezed open and shut whilst still sucking on her thumb.

“Does that feel good, darling?” I asked her, she gave no response as expected, she could feel what I was doing but I didn’t think she understood it.

A few minutes later and her pussy was absolutely dripping wet, my cock was sliding in and out a lot easier, but she still felt incredibly tight inside, my wife grabs her legs under her knees and pull them apart, spreading them so she was doing the splits, giving me room to thrust deeper inside her.

My balls were tapping against her cute little ass, and Kelly pulled her thumb out of her mouth, she closed her eyes and started to let out short gasping moans, “Uh – U –U – Uhu – Uh.”

Her small body began to quiver and shake and she started to cry, but not tears of sadness, not tears of pain, tears of a pleasure she’d never felt before, she had an orgasm and her pussy was dripping warm fluid, it was splashing out on to my balls as I thrust in to her as hard as I could, fighting against a tide of her orgasmic fluid as her inner walls compressed around my cock “Ooooooaagh!” I gasped.

I let out a pleased chuckle.

“What? What’s funny?” my wife asked.

“She just had an orgasm.” I replied, smiling at her.

My wife smiled back, “Well don’t stop. Keep going.” She said.

I continued to pump Kelly’s pussy, fucking her hard and fast, it was the best sex I’d had in years.

A few minutes went by and I was ready, I could feel myself about to cum, I leaned on top of her, almost bashing my wife’s hands out of the way, and I help on to Kelly tightly as I fucked her harder, her legs swinging in the air, I was fucking the hell out of my disabled sister-in-law and I didn’t care, it felt great, “Oooh!” Kelly was still moaning and crying.

“I – I’m – Iii’m – I’m cumming!” I gasped out.

Feeling my balls tighten and my cock go a bit numb moments before it swelled and I thrust in deep and released, “Ug-Oooooooooogggh!” my tip swelled and my cock twitched against her tight inner walls as I felt myself shoot out streams of hot sperm inside of her, “Oooooooggh – Oooagh – Ooogh – Ug –Ooooggh!”

“Oh my god, have you done it?” asked my wife.

I nodded, while remaining still, my cock deep inside Kelly’s pussy, letting my balls drain in to her, “Yeah.” I gasped, “Oooo – Yeah.”

I leaned my head down and kissed Kelly all over her face and then her lips, “Mm – That was incredible, Kelly, you’re so beautiful baby – Mm.”

I sat up and slowly pulled out of her, my cock left her pussy with an air-pop sound and it was covered in a layer of her fluids and mine.

My wife quickly closed Kelly’s legs, “Keep that in there.” She said, referring to my sperm, “Good girl.” She said to Kelly, stroking her hair and face, “Very good.”

Kelly fell asleep and so did I, then later that night my wife woke me up, “Wake up. Fuck her. Go on.” She said.

“What? – I already did.” I replied.

“The more times you fuck her the better the chances of her getting pregnant…” she said, “…now come on.”

So I woke myself up, rolled on top of Kelly and I fucked her again, she was asleep when I started, but as soon as felt me push my cock inside her pussy she woke up and started to moan again, “Uuh.”

I spent the next 3-4 weeks fucking Kelly every single night, sometimes 2-3 times a night, I was knackered, but it was very enjoyable.

My wife kept doing pregnancy tests with her and then one afternoon she rang me while I was at work, her voice filled with joy, “She’s pregnant! – She’s pregnant!”

It had worked, Kelly was pregnant, and it was the best news I’d ever heard.

We immediately set out a plan to pull Kelly out of the local special school she attended and cancel all home visits, in a few months’ time when she started to show, we couldn’t risk anyone seeing Kelly with a large belly and figuring out that she was pregnant.

Slowly for the first few months we reduced our interactions with friends and family, gradually retreating so no one would suspect anything, until eventually we were locking ourselves away in the house, away from everyone.

Nearly nine months later and my wife delivered our baby, Natalie was born at 03:48am on June 6th 2023, and she is beautiful, my daughter, OUR daughter.

A couple of months later and we started to go back out again, coming up with a story to tell out friends and family who were obviously quite surprised to see us with a baby.

We told them that we decided to keep the pregnancy quiet for fear of jinxing it and potentially losing the baby, they bought it, and my wife managed to slip a birth registration through the system in both our names without suspicion.

We finally had the child we’d always wanted, she was healthy, beautiful, and ours.

We continued to care for Kelly, why wouldn’t we, I don’t know if she’s aware that Natalie is hers, but I’m sure she does deep down, and at least they’re part of each other’s lives.

Natalie is now nearly 2 ½ years old, and my wife has been dropping hints that she would like a younger sibling for Natalie to grow up with, and I guess that means impregnating Kelly again….. “Sure, why not.”

So yes. We are using Kelly as our own personal baby making machine, and it’s a lot of fun, and I do love fucking her.