John sensed that the teenager had adjusted to the strange and wonderful sensation of being penetrated for the first time and he began to gently rock back and forth, eliciting excited gasps from the eager young teen.

Sparks hissed as the broad cock nudged up against her cervix, but she knew that her body would spread itself open as far as he needed to go. She kissed him again and looked into his eyes.

“I want to feel all of you inside me" she said in a breathy moan.

John nodded and began to push steadily into her, feeling her cervix dilate in welcome for him and allowing him slow and measured progress into her tight young body. He eased his way forward, until he had finally pushed into her womb and Sparks reached down to feel the bulge in her tummy his massive cock had made, as he worked himself inside her. She could feel his big heavy balls resting on the cheeks of her bottom, the weight reassuring and yet hugely arousing.

She sighed happily, feeling like her body was being used for its natural purpose at long Last and she kissed John with fervour. Matching her growing desire, John began to slowly and carefully pull back from the young girl, before steadily pushing forward to fill her once again.

Sparks let out a little moan as her body responded to making love for the first time. Her hips began to rock back and forth in time with John's movements, making his penetration deeper and more satisfying for both of them. They bodies moved in perfect time with one another, urging each other on with gasps, sighs and moans. Sparks moved her hands down to hold Johns waist, feeling the tightly controlled power behind his muscles as he moved gently but firmly inside her.

The lovers’ movements became erratic, their breath more laboured as they quickly approached their climax. John cupped her head in his hands protectively and stared into her eyes, their faces only inches apart and their pupils dilating with ecstasy as they both came long and hard.

Sparks thigh's trembled uncontrollably as she experienced her first orgasm with her man inside her. Her tight pussy sucked on John's jerking cock eagerly, hungrily encouraging him to fill her up. Her eyes widened as she felt the first surge of his cum into her womb and then she groaned as her climax lengthened, rewarding her young body for following its natural drives. She let go of John's waist and gently cupped her growing stomach, as she felt each blast of his cum shoot inside her. John raised himself up on his arms to give her room to grow, whilst repeating his urgent little thrusts, deeply ensconced in her as he was.

Sparks could feel the enormous spheres of his balls trembling as they quivered against her bottom, flexing and pumping to make sure that every drop of spunk in his quad would end up inside her body. The redhead groaned euphorically as her belly expanded to home all of John's cum, as he filled her tight young body to the brim. Finally spent he gently eased back, Leaving her feeling sadly empty, but the rapturous feeling of carrying such an enormous quantity of his semen in her densely packed womb proved to be ample compensation.

“That was wonderful" she sighed ecstatically, her eyelids Languid after the sensory overload.

“You are wonderful" John said, leaning in to kiss her lovingly.

Calara and Alyssa had watched the whole encounter enraptured. They adored John for the caring and gentle way he made Love to their friend for the first time and when the two of them had finally finished, the girls moved forward to embrace her and whisper gentle endearments in her ears. Sparks lovingly caressed her hugely swollen belly, enjoying the different feeling when it was her womb filled with cum rather than her stomach. Calara and Alyssa joined her in stroking her abundant tummy, with soft caresses of their elegant fingers.

Now that she carried John's cum inside her womb for the first time, the teenager finally felt the equal of Calara and Alyssa, unified in their purpose as John's mates. She sighed contentedly, the feelings of inadequacy and inferiority washing away.

John moved between the girls so that Calara was on his left, with Sparks on his right and Alyssa cuddled up protectively behind her. John looked the redhead in the eyes as he ran his strong hands over her hugely expanded abdomen and the Look he gave her confirmed that she was right, she was his woman now.

They all cuddled up together to enjoy the intimate moment and rested comfortably in each others arms.

John lay back and relished being surrounded by the beautiful young women that he Loved so much. He could hardly believe what they had been through and survived today, but he knew instinctively that this was just the beginning of their adventures together. The happy trio had become the happy foursome and he couldn't be more glad, as he Looked down devotedly at the teenagers wrapped in his arms.