By sub01

In the master bedroom I slipped quietly into bed and snuggled up behind Mary.  In my absence she had changed into an exquisitely sexy blue satin slip, and now I felt myself stiffen with arousal as I embraced her.  The thin material was impossibly silky, so sensuous against my skin.

"Did you get her tucked in?" Mary asked quietly.

"Mmm hmm."  I smiled and gently kissed the back of my sister's neck.  As I held her in my arms, Mary rolled over and looked at me hopefully.

"So tonight... it's... it's just the two of us?"

In answer I smiled and kissed Mary on her lips, a gentle, lingering kiss that seemed to last an exquisite eternity.  I was terribly horny, but also in no immediate hurry.  We had all night together, after all.  For a long moment I just enjoyed having Mary in my arms, and her breasts so soft against me, and her gentle fragrance so sweet.  She smelled faintly of jasmine, and I realized she had perfumed herself in my absence.

Her satin slip was so sexy, so alluring.  I had thought last night that I would never see her in anything as sexy as the red silk basque, but this slip was absolutely exquisite.  Lace fringe around the edges, its neckline plunging just deeply enough to show a hint of Mary's cleavage, and so silky and smooth that it clearly showed her nipples.  I slipped my hand down and found with delight that she was wearing matching panties too.

"Like it?" my sister asked softly.

"I love it," I told her.  I really did.

"I bought them just for you," Mary admitted with a shy smile.  "Today when we were out.  I... I thought you might like to have me in something fresh.  Something that... well, you know..."  She let her voice trail off, but I knew what she was thinking without her having to say.  She had wanted me to have her in something that Carol never had... something that would be my own to share with her, even if it was her and Carol's bed.  I hugged Mary tighter and kissed her again.

"It's perfect, Mary."

Mary looked at me with wide eyed hopefulness.  "Make love to me, Brian?  Please?"

There was nothing else in the world I wanted more.  I reached for Mary's wrists, but she stopped me with a timid look.  "No games tonight, please Brian?  Just for tonight?  I... I just want to make love with you."

She was blushing... or was she flushed with excitement?  I leaned in and kissed her gently, smiling.  There was no other way I would have her tonight.

*  *    *

We made love with the drapes still open and the moonlight casting a romantic, shimmering light across the bed.  In the moonlight Mary looked to me more lovely than ever before.  I made love to her first with my mouth, lying between her legs, pulling her silk panties aside and pleasing her with my lips and tongue and fingers.  In the darkness she lifted her legs and opened herself to me, sighing softly.  She had perfumed herself between her legs, too.  She smelled sweet, and tasted just as exquisite.  Her musky arousal was strong, and so appealing that I licked her so deeply and eagerly that she put her hands on head, slipping her fingers into my hair and slowing me.

"Oh Brian, please go slow..."

Ten minutes, an hour... I have no idea how long I was between her legs.  I lost all track of time, my entire being focused on making love to my sister's lovely, shaven pussy.  She held me the entire time, guiding my tempo with her hands, clutching my hair as her passion threatened to peak and slowing me just in time so it wouldn't.  She arched her back and angled her hips, rubbing herself on my face, and for a period of time the only motion was that of her hips as I kept my head still and let her use my lips and tongue for her pleasure.

My hands were on her hips, and her belly, and then up underneath her delicate slip and on her breasts.  I stroked her gently, teasing little circles around her nipples as she sighed and moved on my face.  Her hands clutched mine through her slip, holding them to her, stroking my fingers with hers.

And then she was coaxing my hands from beneath her slip and sitting up.  In the pale moonlight I helped her out of her slip and then her panties, feeling breathless at how beautiful she was.  Naked, she pulled me close even as she lay back, drawing me with her, embracing me with her legs and arms.  I didn't need even to guide myself.  I was inside her effortlessly, nudging between her delicate folds and sinking deep.

We lay together for a long moment, embracing, just being together.  Mary was so tight on me, so warm.  I moved inside her gently, enjoying her feel even as she planted kiss after kiss on my lips.  She kept her eyes open the entire time, watching me intently.  It was a powerfully intense experience, to gaze into my sister's lovely eyes even as I felt her clenching on me.     

As I began moving inside her, Mary slipped her hands down and gripped my bottom.  Her eyes were wide and hopeful.  "Please, Brian... go slow?"

I did go slow.  I made love to her gently.  Not fucking, not using... making love.  Slowly, deliciously.  I kissed her and didn't stop, our lips remaining together the entire time.  Not talking, not speaking, just kissing and moving together in the darkness.  Mary was so tight on me, so warm, so delightful.  I moved how I knew she liked, angling just right so that I nudged her hooded clit with each deep thrust.  Taking delight in how contentedly she sighed, and how passionately she kissed me, and how tightly she clutched me to her.  I held her too, and in the pale moonlight Mary wrapped her legs around me and dug her heels into the backs of my thighs, urging me deeper.  Drawing me into her with her legs and arms and the gentle clenching of her tightness.  I wanted never to leave her.

We finished lying on our sides, spooning.  I wrapped my arms around Mary from behind and fucked her slowly, pushing her knees up almost to her chest.  As we moved together slowly I slipped one hand down between her legs and found her clit.  Her gasp of delight left no doubt as to her arousal.  As I began gently stroking her in time to my thrusts she slipped her own hand down between her legs and placed it on top of my own, guiding my motions, urging me faster.  I smiled and buried my face in the back of her neck, kissing her again and again and again.

I made a conscious effort not to cum until I felt Mary's pussy clenching on me in orgasm.  As she gasped and stiffened in my arms I began stroking her faster, both with my fingers and my cock.  And kissing her.  And hugging her.  And loving her.  When I came inside her I didn't just cum... I exploded.  I grunted into the back of Mary's neck and flooded her pussy as if I hadn't cum in a week.  My love for her – and my lust – was that powerful.

Afterward we fell asleep just as we were, with me pressed up against Mary's back, my arms around her, my cock softening inside her.  I closed my eyes and smiled, drifting asleep to the soft, gentle sounds of Mary's breathing and the feel of her body against mine.

*    *    *

Sometime during the night I awoke to the strangely exquisite sensation of being mounted.  A lush, moist warmth enveloped my nighttime erection, fitting around me so tightly.  In my sleepiness I realized Mary was atop me, and I was inside her.  I was hardly aware of anything except her tightness, and the fact that she was making love to me.  Her lips found mine in the darkness and she kissed me gently even as she moved on me.  Her gyrations were slow and deliberate, her fingers in my hair and her lips on me and her feet pressing into the sides of my legs.  She seemed in no hurry.

I was awake now, and yet I didn't say anything.  The room was dark but for the gentle moonlight.  What time it was, I had no idea.  I knew only that this was the most beautiful thing in the world, waking up to my sister fucking me.  In the darkness I could see her lips curl into a pleasant smile even as she sighed contentedly.  She tightened on me rhythmically, milking me.  How long this went on, I had no idea.  It felt like an exquisite eternity.  I knew there was no way I would cum after having spent myself so fully already, and yet it was soon happening.  Mary pressed against me, her breasts flattening softly against my chest, kissing me as she milked from me my orgasm.  I spurted inside her with a muffled grunt, humping up to meet her gyrations in the darkness.

Afterwards Mary slipped off to lie beside me again, laying her arm over my chest in the darkness.  I didn't say anything.  Sleep was upon me again, as if the entire time I had never completely awoken.  As I slipped back into the sweet embrace of sleep I was faintly aware of Mary snuggling up against me and whispering to me quietly.

"I love you Brian..."