"I need you inside my pussy"

"I need you to fuck me!" she half pleads half moans, now stroking her cock and fingering her pussy through the thin satin of her robe. She's literally squirming against your body, almost as if she's trying to meld herself into you. You don't realize that you've been backing up until the back of your knees hit the side of your bed, and you fall backwards onto it. Even then, she just crawls up on you, her body shivering with pent up lust and emotion as she cuddles her head into the crook of your neck and proceeds to lick, kiss, and nibble at it.

All the while, her hips haven't stopped moving. Yet they aren't poking at the underside of your boxers like you expected, but rather rubbing themselves above them. To be exact, she's rubbing her wet panty-clad mound, with her pussy and balls, against your own already hard tent. You are hit with the realization that she isn't talking about doing it with your ass this time. Instead, she wants you in her. She wants vaginal sex.

"But we c-Can't!" You can't help but say, your voice rising near the end as her loving nibbles turn into one tense bite. But even then you have to say it. "T-That's something only married couples do!" This wasn't you being nervous anymore. This was an outright panic, and for good reason too.

It wasn't strange for girls to do whatever they wanted with their penises. It was a given that they would end up fucking all sorts of boys, orally or anally, from their teenage years and beyond. You even knew of a couple of friends in school who'd become the personal property of their sisters or mothers. Frankly, if your fantasies of doing it with your childhood friend Ashely didn't pan out, and you didn't find yourself a good girlfriend sooner or later, you were fully aware that your future might be that of the family's cum-dumpster.

But a male doing a girl in her pussy was entirely different. It only happened rarely, usually when the wife decided that it was time to have children and wasn't interested in having it done artificially at the clinic. It was considered the ultimate form of love from a woman to her man, being downright sacred in some places of the world. The law was merciless on a man who tried to even insinuate that they would do this to a woman unwillingly. City wide gang-**** of the man's orifices, a chastity belt with the most cruel design to keep a male from cumming, and the stripping of all human rights would be considered getting off lightly.

And here was your sister, so hot and bothered, so much more than the rest of the day combined, trying to initiate such a thing. Such a thing that, if discovered by someone, would lead to the worst possible scenario for you. The very thought of what might happen to you made your hard-on begin to fade. No, you couldn't have that! You needed to-

That is when tears hit your face.

Looking up from your increasingly panicked thoughts, you are horrified to see your sister's face twisted in the most sorrowful way. Her eyes were shining in the dimness of night with tears, and her teeth were gnashing together as if she'd swallowed something particularly foul. She wasn't moving that much anymore, only shakes here and there. But her shaking wasn't that of barely restrained sexual intention, but that of sobs that tore at your very soul.

"*sob* Dougy... *sniff* is doing it with me so bad?" Her soft hands were gripping your shirt, and she looked more **** than you'd ever seen her. "Do you... *sob* not like me that much?"

"No! I love you Sarah!" Your voice rose as you sat up, moving to hold your sister's shoulder's in your hands. "But that is something only couples do! Something only people in love do! We can't do-"

"But I love you."

"Eh?" Your tirade stops before it can truly begin. Your hands slacken as your thoughts freeze.

"*Sniff* I love you Doug. I always have." She grabs your wrists and moves them, one moving up so it can cup her tear covered face and the other down between you so you can feel her girlcock. "I've always wanted to do it with you. Ever since I got my first erection even. I was so happy when you took me into your mouth." You can feel her throb once down below, and you squeeze it. She gives you a watery smile in return. "But it wasn't enough. Even though I had so many of the boys service me before, even though I tried to treat it like it was normal and like it wasn't a big deal... It just wasn't enough. My dick was satisfied a bit, but when you touched my girly bits..."

She shivered a bit, and you become aware of a liquid staining your underwear. It was seeping past the cloth, and it seemed to cling to your penis pleasantly.

"But, Sarah..." You can't seem to finish. Your thoughts are growing cloudy, and it doesn't help that her words are still ringing in your head. You knew she'd fantasized about you. Your face was pasted on HER playboy magazine after all. But never would you have imagined that your little sister's feelings were so strong. It should be out of the question, and yet...

"We both love each other Doug," Sarah continued, her wet eyes pleading. This was beyond a puppy face. It was too beautiful, too unfair. "So why can't we? Why can't we do it like a couple?"

Damn. There was never any chance against her, was there?

"Aright Sarah," you say with a defeated tone. "I'd have to be a complete idiot to say no after all that you said." A great knot seems to come undone as her face morphs to joy, and you know that you truly are lost. You've fallen completely for your sister, and there was nothing that can change that.

It doesn't take long for the two of you to decide your position. Now, unlike all the times before, it is you above her. She looks up at you with the most adoring smile a girl could possibly have, her body completely bare except for the small ribbons she'd tied on her neck and at the middle of her length.

"What are these for?" You tug lightly at the one on her dick, making her giggle.

"Why not? I think it looks cute!" And it did, giving the incredibly manly piece of equipment between her legs an oddly effeminate look. It just makes her look at that much sweeter. Like a present ready to be opened.

"Alright, let's see here..." Gingerly, you lift her large balls up to expose the tiny slit below. It is throbbing just like before, but now the lips were slightly parted and the juices coming from within were being secreted at a visible pace. Yet still you hesitated, your previously dark thoughts still lingering somewhere in your mind.

"Hurry, Dougy! I need it!" Her eyes were wild, the lust she had before coming back with a vengeance. It was infectious too, as with a burst of confidence you open up her legs completely, grip her hips, and push yourself into her body.

She moaned loudly, without a single hint of pain despite the tiny bit of blood mixing together with her juices. You on the other hand went cross eyed as you felt her velvety walls tighten up around you. It made you freeze for a second... then instinct took over and you began swinging your hips as fast as you possibly could.

"Ah! Dougy! Dougy!" Sarah took a hold of her glistening girlcock and began jerking off, the movements timed perfectly with your thrusts. Her precum is flowing steadily, and each jerking motion splashes some on her face and breasts. At the sight you begin to feel that dryness in your mouth again, but when you lean down you discover that your sister is holding her dick too close to her body. You can't reach it, no matter how hard you try.

"Sarah! Sarah, please!" Your sister seems lost in her own little world, drool coming out of the side of her mouth and her eyes nearly rolled back. Yet after a particularly powerful thrust from you (and how in the world were you lasting this long anyway?) she at last notices your voice, and sees the desire in your eyes.

"Here, big bro! Take it!" she shouted in-between breaths, suddenly swinging the cock she'd hugged so close forward. It slaps your face, and you find yourself liking the feeling. Apparently she did as well, for she slaps you with it a few more times, getting precum all over your face. The feeling of her hot throbbing meat striking you makes you moan, and a nicely timed swing (whether it was from you or your sister you cannot tell) finally has her dick's tip landing inside your mouth.

With a moan that shakes her dick like a vibrator, you begin sucking. Her constant flow is like that of a milk bottle, and although her monster size isn't large enough for you to enjoy without having to bend awkwardly, you still find yourself greatly enjoying the snack as you continue banging her. Her head is shaking side to side now, almost as if she can't take the feeling, but the strong pushes from her legs on your butt assure you she only wants more.

You're both working together to mash your hips with bruising ****. Her own balls are **** to bounce and jump at every hit, somehow managing to avoid being slammed each time by mere millimeters. Suddenly however, they lurch upwards, and her dick gives one big jump.

"I'm cumming!" she gasps out, and you stop for a moment as you pull your mouth off and jerk her off.

Predictably, she showers you completely, the amount so great that you don't doubt it would have burst you had you tried to take it. What you didn't predict was her pussy squeezing so tightly. You know you're finished, so you lay yourself forward, trapping your sister's still shooting girlcock between your bodies and intertwining your fingers. She looks up at you with the most adoring expression ever, and leans up to kiss you chastely.

"I love you, big bro." With those whispered words she forces your hips forward one more time with her legs. You release yourself entirely within her then, completely shattering any thoughts you might have had about escaping her grasp.

But why would I ever want to leave. Is your last satisfied thought as you and your sister descend into dreamland.