Grandkids for my sister in law

My wife and I have no children, but her sister has a son who recently got married. Wife and her sister both cherish the idea of little ones joining the family.

I’m David, 50 years old. My wife Caroline is 48. We have no children. My wife’s younger sister Sally is 45, and was widowed at age 40 when her husband was killed in a traffic crash. Her son Nathan is now 22, and has been married to his wife Whitney age 20, for two years. They were high school sweethearts.

Nathan and Whitney thought it would help soften Sally’s grief over the loss of her husband if they could give her a grandchild she could help them care for. After two years of nothing happening, Sally sent Nathan to see my wife Caroline at her job as a nurse at the local fertility clinic. After some testing by the doctors there it was determined that Nathan is infertile. Nathan and Whitney both work at the same construction company, and have good health insurance that would cover IVF treatments, but the office staff is small, and neither of them wanted to submit the paperwork because the construction workers would tease Nathan mercilessly for being “less than a man.”

When Caroline head bout this, she came up with a plan she discussed with Whitney and Nathan, and once they approved she brought me her suggestion. ”You can get Whitney regnant, and let my sister believe her son is the father.” I asked, “How does Nathan feel about me fucking his wife until she gets pregnant?” Caroline told me, “I took care of that. I agreed he can fuck me every time you fuck Whitney. In fact, we will do this in the same room at the same time!” I already knew Caroline had intense fantasies about much younger guys, so I was not surprised. The thought of fucking Whitney while Caroline and her nephew watched and fucked each other was exciting, so I ageed to help them out.

The next weekend Nathan and Whitney came over to our house, and we began the process. Whitney walked in and kissed me on the mouth, while Nathan and Caroline hugged each other tightly. “You’re so wonderful to help us out this way, uncle David,” Nathan announced. “I’m going to really enjoy fucking you wife while you fuck mine!” Caroline just smiled at me and began leading Nathan and Whitney to our master bedroom. Caroline quickly undressed, imploring Nathan, “Come fuck your naughty aunt, youngster, while David fills Whitney’s fertile cunt with his baby batter for you two.”

By the time Caroline finished her very detailed invitation, Nathan had his clothes off and his penis in her mouth. Whitney had stripped naked and was on her back on the king sized with her knees spread wide. “Fuck me, uncle David,” she implored. “Fuck me like you want to knock me up while my husband fucks your charming wife!” Seeing Nathan’s rigid dick already inside Caroline’s wet and waiting pussy, I didn’t need any further invitation. My mouth was on Whitney’s nipples as I plunged my erection inside her young vagina, and began the rhythmic thrusting we all four hoped would produce a grandchild the young couple so generously wanted to give to my sister in law.

While Whitney and I continued our missionary position intercourse, Nathan had already ejaculated into Caroline’s twat, and she was sucking him vigorously to get him hard again. Whitney and I watched as Caroline rolled onto her stomach and Nathan began steadily pushing his young, thick penis inside her ass hole. Caroline was moaning, “Naughty nephew Nathan, fuck my ass and let me feel you filling it with hot spunk!” It was just then that Whitney ad her orgasm, and soon afterwards I was shooting my seed into her, covering her cervix with what all four of us hoped was enough semen to get her pregnant.

“That was every bit as awesome as I had hoped,” Caroline sighed. “Let’s switch partners, and fuck our own spouses now, and we can repeat this ritual in the morning.” Nathan chimed in, “Aunt Caroline, you surely are one amazing fuck! This is the most horny I have ever been!” Whitney already had her mouth around Nathan’s prick, sucking with all her might. I could see her swallowing his third load as Caroline feel my tongue licking Nathan’s fresh cum out of her pussy and ass. By the time I finished fucking Caroline and pumped my seed inside her as sloppy seconds to Nathan, we all four nodded off until morning.

Before sunrise Sunday morning, I saw my cell phone flashing on the nightstand where it was recharging. When I tapped the screen, I saw a text message from sister in law Sally. “David, don’t tell Caroline, but I already know about what you and she are doing for my boy and his wife. Nathan’s car will be in the shop next weekend, so I’ll be driving Whitney and Nathan to your place next Saturday. I appreciate everything so much I’m going to tell her myself when we get there, and give you a couple hours in my own pussy as a thank you present.”

But, that’s another story.