On the underground in Paris, at rush hour, the trains are packed with people and only the lucky ones get a seat. Everyone else has to stand; packed in so tight you almost can't look down at the floor. The train is humming and the tracks are noisy - everything clatters and sways. We are almost the beginning of the Central Line, the busiest one, where there are long distances in between stops.

I'm standing right in front of one of the sliding doors, next to the compartment wall, looking at your face reflected in the glass of the door. You're standing behind me and I can feel your breath on my neck; you lower your head a little and rake your chin across the back of my neck, the stubble scraping tender skin. You know that makes me hot – always – and my spine sings knowing your body is inches away. Everyone around us is reading newspapers, trying to chat above the clatter of the train or just dozing.

Your right hand slips around in front of me, under my shirt and skims over my breast. You leave it there, unmoving, feeling my nipple harden under your fingers. I raise my right arm, placing my hand flat against the side of the door and smile.

You lean over my shoulder and whisper in my ear. "I'm going to fuck you, here". And you pinch my nipple hard, so I gasp a little. I look to my left; a huge wall of a man in a massive overcoat has his shoulder against the doors, blocking my view of the carriage entirely. I can smell the wet wool of his coat. I look in the glass, over my shoulder at your reflected face. “No” I mouth at you, barely whispering. “Really…. No!”

“Oh, yes…” you hiss in my ear. I’m scared because no matter how crowded and noisy, people simply aren’t deaf, dumb and blind. I’m scared because I know you well enough to know that you won’t listen; that you’re going to get your way, because you always do. And I’m scared because I can hardly let you touch me without moaning. But you are pressed up against my back, and I can feel that you’re hard and I know that this will please you.

"Unzip me," you whisper. I reach my left hand around, between us, and unzip you and I can feel that you are hard, very hard and it's making me breathless - my heart is hammering against my chest. I slowly pull your cock free and I can feel it hot and throbbing in my hand and I want to turn around and put my mouth on yours and suck your lips and kiss you hard. But I don’t

You push my hand away and slide yours down between us and hitch up my skirt. I look down at the glass in front of me. You’ve pulled it up so high that even at the front, I can see the tops of my stockings reflected in the glass. What the hell must it look like at the sides. I say a tiny fervent prayer that the huge man beside up doesn’t decide to move, so that it's rucked up between our bodies and I can feel your hot cock against my bare ass and I arch my back a little to feel it better, and you whisper, next to me, "You DO want it, don't you..." And you KNOW I do, "Yes, Sir. Yes I do," I whisper... you can't hear me. But you can see my lips move and you KNOW what I am saying.

And I stand a little on my tippy toes, with my legs spread wider so I can feel your cock slide between my legs. And you can feel that I am so wet, my panties are soaked and my thighs are sticky.

"Pull your panties aside," you whisper, ”so I can fuck you." But I hesitate, because as horny as I am, I’m still scared. I’m scared I won't be able to keep quiet. You lean your head over and say "DO IT... NOW" firmly in my ear.

I do... I reach down and between my legs and pull the crotch aside, and my fingers brush over the head of your cock as I do. I can feel you slowly guiding it just to the opening of my pussy, and slowly pushing the head of it in.

And I gasp, because I’m so tight, because I’m not relaxed at all, and I’m scared. And you reach your hands around to the front of me, onto my hips and whisper: "Not one sound..." and you push your cock into me; pulling me onto it by the hips.

You’re breathing in my ear - breathing harder but you are still so, so controlled. And my legs are quivering as you slowly, pump in and out of my pussy. I want to move – god, I want to move so badly - I want to ride it but I can’t trust myself to be as controlled as you. It’s a subtle yet effective form of bondage; immobilized by what people will think. By millimeters, I’m pushing my ass back against you to get more of what I need from you.

You are throbbing as you fuck me – I can feel it acutely because you’re moving so slowly - and every jolt the train makes feels like a thrust. I lean my face against the cold glass of the sliding doors, and grind myself on you. Every inch of my skin is flushed now and my own breath is coming in short, sharp bursts. Pushing myself away from the glass, I watch my own face and yours. You’re looking too and you know this smile; this is how I smile when the only thing I want in the world is for you not to stop fucking me like this. Holding in my moans is almost killing me.

Because I’m going to come; I’m seconds away and every stroke is pushing me closer. Oh god, I can feel the heat that always begins, it seems, in the bones of my hips first and then my muscles lock tight onto your cock; I watch your face in the glass as it happens. It erodes your own control just slightly – for a moment, your eyes slip closed – you raise your chin and inhale deeply. Then you’re back; eyes open again, you grin at me in the glass. I hear you whisper it again "Not ONE sound," and I manage to nod as my body twitches, coming hard on you.

You’re cock feels twice as huge inside me now. Your slow thrusts become so regular, so deep and I know it’s your time. Your hands on my hips pull me onto your cock hard and you stop. You spurt and then pulse cum into me, the flood is hot as it fills me and, as you move your hips in tiny shudders, it trickles thickly down my inner thigh.
Burying your head in the crook of my neck, you kiss the skin there, silently, once and whisper, "good girl" in my ear.

You pull out of me, and zip up your pants and I reach around and smooth my skirt down.

And the train pulls into the station.