We were alone in the big house, Mom and Dad being off to some social bash, when she danced into my room, catching me just toweling down from a hot shower, and whirled about, hugging her thrusting tits in excitement, babbling the news and throwing both arms about my neck before she noticed my nakedness.
She was going to be married, she told me, following me down onto the bed as I stumbled backward. Her weight was a delightful pressure and her thigh was soft and warm against mine where her skirt had slid up in our awkward descent.
She had been going with George Harley for several months and I wasn't really surprised that he had finally popped the question. I suppose he figured it was the only way he could pop the meat to Nadine, and Lord knows he was anxious to do that. The poor guy kept a perpetual erection when he was with her and she had admitted that she played with it just enough to keep him in a state of constant shock, never quite permitting him to reach an orgasm, nor letting him go beyond a fingertip caress of her hot little snatch.
Nadine was so busy describing the circumstances under which George had proposed that she didn't notice the upward crawl of her skirt until she felt the thrust of my swelling cock against her bare crotch.
She had removed her panties immediately upon entering the house, for they were wet from her torrid petting session with her husband-to-be. Now, for the first time, her little brother found himself with a rock hard cock pressed delightfully into the deep crease of her pussy.
Her voice trailed off into a lengthy silence while she stared down into my face with eyes which slowly softened in shared desire, the long lashes lowering as if to hide her thoughts.
Her body had remained motionless after that initial discovery, except for the slow rise and fall of her breasts under the thin blouse, their warm resilience sliding against my chest and arm as she lay half on top of me, the summer sun peeping through the window as if to encourage the urge that was already boiling through our flesh like liquid fire.
"Steve!"
It was the only word she said, and it was breathed out from those moist, red lips so softly that I felt, rather than heard its implied hunger. Her mouth floated down to cover mine and I tasted her sweet tongue boring between my teeth and curling about my own in a kiss that sent my pulse skyrocketing and made my cock jerk against her cunt with repeated archings.
Our lips still glued together, I managed to roll over until I was on top of her, my fingers fumbling with her buttons and opening the blouse to expose those luscious tits, their melon red nipples already strutted and thrusting, quivering as my hand fondled them in instinctive caressing.
I kissed over her chin and warm, white throat until my mouth could claim the delicious morsels that formed the peaks of those two trembling mounds. I had never touched a girl's breasts before, other than the insignificant nubs of my undeveloped playmates. Now, I was not only touching, but licking and sucking with an avidity that made my sister whimper with mounting excitement.
I sensed, and she later verified my conclusion, that any movement of my hand toward that hot dampness between her legs would drag her back from the very edge of surrender. I managed to hold my hips perfectly still, employing only hands and mouth on those succulent nipples, drawing their spongy fingers into my lips and sawing my tongue back and forth across their nerve laden tips.
Carefully, sweating with the strain of restraint, I began inching my hips upward, sliding my engorged cock through the slippery furrow of her cunt until I felt the increased heat and trembling of her vaginal entrance. Even then, I hesitated, pressing just enough to arouse the sensitive membranes and draw a sudden gush of hot nectar from the eager depths, bathing my cockhead and causing it to jerk forcibly against the lips of her pussy.
Her legs had been stretched wide on either side of mine, unmoving except for an answering quiver as I moved against her. Now, they bent and lifted, the thighs sliding along my naked hips until her heels were pressed hard against the bed.
Sucking her breath in between tightly clenched teeth, she pushed her hips upward, sliding the incredibly hot lips of her pussy over my prick and drawing me into her belly.
Like most boys, I had experimented with various substitutes in the youthful attempt to duplicate the feel of a woman's cunt on my aroused prong. I had ranged from warm calf's liver to a carefully prepared watermelon, enjoying them all. But nothing I had experienced was anything like the mushy tightness of Nadine's receptive cunt.
The pulsating lips encircled the head of my cock and I was prepared to slide deep into that delicious grip. Then I felt the resistance increase, and the pressure seemed distributed almost evenly over my throbbing glans, becoming painful as Nadine pressed upward with greater determination.
I had never considered the possibility that my sister was still cherry. So far as I was concerned, a girl who went out with boys could not possibly resist the lure of their beckoning cocks. To discover that Nadine had retained that hymenic barrier and was now trying pantingly to effect an entrance for my eager prick sent maddening thrills through my youthful balls, forcing a surge of fuckjuice from the boring tip and lubricating the narrow slit in the quivering membrane.
Her hips jerked, the tremor grinding the delicious pressure against the head of my cock, and her thighs slid higher along my hips. Her hands flashed from back to buttocks, the fingers gripping the tense pads of my lifted ass, pulling me down between her legs as she shoved that hungry pussy upward with little whines of desire.
I slid both hands beneath her shoulders, wrapping my fingers about them until the tips were pressing her collarbone. If she was really as hot as my limited knowledge told me she was, she would welcome whatever force was required to penetrate that virginal shield.
I bore down with a tightening of thighs and hips, moving my ass in a slight grinding. Nadine grunted against my shoulder, but her legs scissored my waist more firmly and the fingers on my bottom encouraged me to greater effort.
It hurt! So far as my cock was concerned, I might as well have been trying to stick it in her navel. I was certain, from frequent discussions with some of the older boys who had encountered this natural phenomenon, that the maidenhead had an opening. But all I could feel was a solid, hot pressure that had ceased to yield under my steady assault.
Nadine seemed unable to force words from her panting lips. But her strangled groan of desire demanded still greater effort. The mouth of her cunt tightened and relaxed about my shallow insertion, the warm wetness moving against the sensitive head of my cock like a hungry kiss, and I redoubled my pressure, biting my lip to stifle the cry of pain as the resistance made itself felt up the entire length of my six inch shaft.
"Aaaaaarrrggg Hhhhh!"
I added a half-scream of my own to Nadine's animal-like cry as the barrier yielded and my prick wormed through the torn membrane, enlarging the entrance until the flaring corona snapped through and I was sliding into her pussy with a groan of unprecedented pleasure.
Her hips retreated, ass slamming against the bed in an attempt to escape the invasion of her tender cunt. But the feel of that hot tissue, folding and writhing about my sliding prick, was too overwhelming. With a powerful hunch, I shoved until my pubic bone grated against her clitoris and my balls slapped into the crease of her trembling ass.
I held it there, completely hilted in her ruptured pussy, panting as the cuntal walls shifted in involuntary adjustment, fitting their hot wetness about my cock and squeezing it with rapid undulations that threatened to suck my come from me before I could begin fucking that slippery sheath.