John, a striking man in his late 30s with dark hair, had always been open-minded when it came to his sexual adventures with his wife Sally. But when Sally dropped the bomb that she was infertile, he couldn't help but feel a pang of disappointment. However, Sally had a plan.

"I've been thinking, John," she said, her voice dripping with excitement. "What if we added another woman to our relationship? You know, to fulfill that fantasy of yours."

John raised an eyebrow. "Are you serious?"

Sally nodded. "Yes, I am. And I think I've found the perfect woman."

Enter Emily, a fiery redhead in her late teens with small perky breasts. She had an impregnation fetish, and Sally was quick to realize that she had an impregnation fetish by proxy. The mere sight of John knocking up Emily turned her on.

The three of them agreed to give it a try. They started off slow, with some heavy petting and oral sex. Emily eagerly wrapped her lips around John's dick, sucking and stroking until he was rock hard.

"Fuck, she's so tight," John groaned as he thrust deep inside Emily's pussy. Sally watched with a mixture of excitement and jealousy as Emily's pussy juices dripped down John's shaft. Sally couldn't help but feel a twinge of arousal as she watched John fill Emily with his cum.

As the weeks went on, Sally became more and more obsessed with the idea of John knocking up Emily. She pushed him to cum inside her repeatedly, and soon Emily was pregnant with their first child. The constant sex continued.

"I can't believe we did it," Sally whispered as she watched John's dick slide in and out of Emily's pregnant pussy. "I've never been so turned on in my entire life."

John looked down at his wife with a mixture of confusion and arousal. "You're really enjoying this, aren't you?"

Sally nodded. "Yes, I am. Watching you knock her up like this is the biggest turn-on I've ever experienced."

John couldn't resist the urge to give Sally what she wanted. He fucked Emily harder and faster, their bodies slapping together as he filled her with his seed yet again.

As Emily's belly grew, so did Sally's obsession. She couldn't get enough of watching John filling Emily, and soon after Emily gave birth to their first child, she was pregnant with their second child.

"I can't believe how hot this is," Sally whispered as she watched John's dick disappear inside Emily's pregnant pussy. "I'm so glad we did this."

John looked down at his wife with a mixture of arousal and concern. "Are you sure you're okay with this, Sally? I don't want you to feel left out."

Sally shook her head. "No, I'm not left out. Watching you two together like this is the ultimate turn-on for me. I wouldn't change it for anything in the world."

John and Emily continued to fulfill their collective breeding fantasies, and less than a year after the second birth, Emily was already pregnant with their third child. The three of them were a happy family.

One day, as Emily lay on the bed with her belly swollen with child, Sally looked at John with a mischievous glint in her eye. "How about you fill us both again? It's nice for us to be here together both filled with your cum." Then they had a hot steamy session again - John filling them both, and Sally eagerly licking up the cum out of Emily's pussy.

And as they lay in bed together, their bodies spent and sated, Sally looked at John with a smile.

"I love you, John," she whispered. "And I love the way you make me feel."

John smiled back. "I love you too, Sally. And I love the way you make me feel."

As they drifted off to sleep, their bodies tangled together, they knew that they had created something beautiful and unique.