Bring Alex into the fold

The mental image of her sleeping boyfriend flickered across Stacy's mind, and the fear she felt for his safety turned to predatory lust as she stared at the creature in her hands. He would become like her. The idea should have horrified her, but her emotions were no longer hers to control, and the involuntary desire to infect Alex made her heart race in anticipation.

The bathroom door opened without a sound, the carpet muffling her footsteps as she walked towards the sleeping form on the bed. In the twilight shadows cast by her shuttered window, she drew the sheets away from him and slowly worked his pants down his legs. Alex muttered at the disturbance, but didn't wake, lying spread eagle and naked from the waist down on the bed.

Stacy's body raised a hand to one shoulder, where the newborn had attached itself. It slithered onto her hand, coiling around her wrist for purchase. She leaned over her sleeping boyfriend, delicately taking hold of his balls and raising them, exposing the strip of skin beneath. She raised the mouth of the worm to his flesh, letting it cautiously sniff his scent before attaching itself with a hungry squeal.

Alex rose slowly to the edge of consciousness, buoyed up by a pleasant, tickling sensation between his legs. He could feel something wet and warm licking him, sucking on him gently, his cock already stiff from the stimulation.

He remembered something similar going on before he'd fallen asleep. The beautiful face of his girlfriend with his cock buried in her mouth. It had felt good then, and it felt good now, even if it was happening in a strange place. Nothing wrong with trying new things.

His body tensed as the sucking increased in vigour, his body reacting to the novel stimulation. Oh God, this really was something else. He'd have to ask her where she'd learned to do this.

At that moment, he felt a twinge in his crotch as several tiny barbs shot into his flesh.

Stacy pounced on Alex when his eyes shot open, straddling his stomach with one hand over his mouth and the other pinning his wrists above his head. Stacy watched his eyes widen from confusion to horror as he recognised her in the dim light, staring from her face to the cock that jutted out, throbbing as she panted above him. She couldn't remove the expression of glee, couldn't stop herself from practically drooling as she saw the fear on his face turn to tortured pleasure as the **** on his loins continued.

She moaned as she rode his struggling body, her pussy juices freely flowing and coating his skin.

Panic dominated Alex's mind. Panic at the sight of his girlfriend's desperately lustful expression as she pinned him to the bed, panic at rigid rod of meat bobbing with her every move and panic at the pain from his crotch which had so quickly became a pleasure beyond his comprehension.

Something was burrowing into him; he could feel it tunneling into his flesh, leaving a sensation of gasping emptiness as it did so. With each thrust his body jerked, the wet slap of a wriggling tail against his thighs coming closer and closer as it entered his body.

He could feel it now, not only the presence within him, but the feeling of crawling into himself, as though the invading creature were a part of him. He felt flesh merge, nerves meld and the release of something warm and moist below his dick.

He was close to climax. He couldn't help it. The barrage of strange sensations and mind-numbing pleasure had overridden any will to fight or escape, and he felt his testicles pull tight against his body, ready for release.

And pull tighter.

And tighter again.

With each shift, he felt as though he would explode, but again and again, his balls were sucked further into his body. He felt his empty scrotum pull taught against his crotch, the **** desire for release now deep within his abdomen.

All other senses had shut down under the onslaught. He couldn't see, he couldn't hear, he could only feel his body squirming in delicious agony as it fought to cum, feel the warmth of a mouth engulfing his cock while a tender finger caressed lips that didn't exist on a man.

Stacy had watched, awash with her body's delight at seeing her boyfriend's eyes go vacant, his jaw slacken as his mind failed. She had released him, his body now reduced to jerking and moaning while the pleasure ravaged him.

A need filled her; a need to turn herself around, bend over his cock and pleasure it again, her tongue snaking over its length like a sheath. One hand snaked down between his legs, over the shrinking expanse of flesh where his balls had once hung and gently entered his newly formed pussy.

Alex came, came with his cock, came with his pussy, came with every fibre of his being as the world exploded around him. He felt himself being emptied, as though the surface of his body had ruptured and his soul was being viciously drained from his flesh.

A deep, throbbing sensation dominated what shreds of his mind remained, and a distant, itching feeling traveled slowly from the deepest parts of his new pussy through his body and into his spine.

An electric thrill shot up into his skull, and Alex passed out.

Stacy's body swallowed, sucked and licked every last drop of cum from her "boyfriend's" cock as it twitched blindly in her mouth. It rose up into a sitting position, the penis coming free with a slurp as her tongue reluctantly released it. She looked down at Alex's **** body, covered in sweat and pussy juice from both her and "himself."

She felt the knowledge form within her that this was not the end of his transformation, that he would become a fitting vessel much as she had herself, and a tool by which others might also be snared.

By the time Alex awoke, he would be altered beyond recognition.

Stacy's body rose luxuriantly from the bed, triumph flowing through her veins as she reveled in her first conquest. Stacy herself felt only the briefest remorse for what she had been **** to do before her guilt was washed away, consumed by her body's desire for more.

And there would be more. Of this, there was no doubt.