You walk into the office for another day of work to find Karen looking at you with an expression of determination on her face. She looks like she means business.

Geto! Come over here. There's something I need to talk to you about.

What is it Karen?

Karen crosses her arms and looks down at the ground I.... I lost a bet with my friend. And now.... her lip curls in disgust I have to... let you put your dick inside me for a whole hour. Karen says it in a rush And I also have to... rub my clit the whole time.

You look at Karen in silence for a moment, trying to process what she just said

This will not be sex Geto! You will NOT thrust, and I will NOT move, and under NO CIRCUMSTANCES are you allowed to cum inside me! The last thing I need is to get pregnant with YOUR baby. We are just going to sit here perfectly still with your cock inside me, and then we are going to go our separate ways and pretend this never happened. And you are NEVER to speak of this to ANYONE. EVER! Is that clear?

Karen's eyes narrow angrily at you for even questioning her words. She takes a deep breath and tries to compose herself before continuing

I am not kidding, Geto. This is non-negotiable. I lost the bet and now I have to go through with it. So if you want me to keep my job here, you'll do as I say. We can either do this the easy way or the hard way...

Alright then. Come over here and get into position. I don't want anyone walking in on us.

Takes deep breath, closes eyes tightly as you position yourself inside her. She bites down on lip in an attempt to remain composed through the uncomfortable process of staying perfectly still around your cock. Once she feels you inside her sufficiently, she lets out a shaky breath and starts rubbing her clit as instructed. Their workspace is quiet, and they can both focus on enduring this hour-long ordeal together. The minutes drag on as Karen tries not to lose control of her body despite the intense pleasure/discomfort radiating through every nerve in her crotch area...

You're... growing... inside me.... I... can feel you expanding against my walls... It's supposed to be still and non-thrusting! What am I going to do?!

No! We agreed I wouldn't move! If you keep this up, there's no way we can finish this hour... And then people will find out what happened and I'll lose my job for sure... Please, just stop growing and stay still inside me....

Fine... I will... move... just a little bit to try and make it easier on both of us... tries hesitantly to rock her hips against your cock

Sorry! It just feels so good to move against you.... I'm trying my best not to lose control....

Thank you... I will try my best to stay in control and not lose track of the time.... But it's getting harder every moment with how good this feels even when it's just small movements like these.... I just hope we can make it through the whole hour without anyone finding out about this...

Oh... GOD! Not there! Anything but there! I can't focus with that going on.... Stop it! We need to stick to the plan! This is supposed to be about you inside me, not your fingers in my- argh! Okay, fine, you win. You can do that while we wait for this hour to end...

Ah! You weren't supposed to do that! Now I can't... I can't stop moving against you... It feels so good! Why did we ever agree on this stupid bet in the first place?! Oh God, this is going to be the longest hour of my life....

With renewed determination, Karen tries even harder to resist moving against your thrusts. Her grip on your shoulders tightens as she lets out soft moans through clenched teeth, her body betraying her in spite of her best efforts to stay still. The minutes continue to tick by far too slowly for either of their likings, each thrust from you making it harder and harder for her to focus on anything but the pleasure-pain coursing through her

As you pick up the pace, her breath comes in ragged gasps and she's unable to form coherent words anymore. All that matters is the sensation of your cock sliding in and out of her, the friction building with each thrust as she tries desperately to focus on anything other than the incredible pleasure/pain coursing through every nerve ending

Her answering moan is cut off as another orgasm washes over her, her body tensing against yours and her grip tightening almost painfully on your shoulders. Tears of relief, exhaustion, frustration, and pleasure streak down her face as the pleasure finally ebbs away, leaving her panting and spent

F-fine. I'm happy now. But you have to stop... We need to keep going... The hour isn't over yet....

(Her breath catches in her throat as you kiss her, the contact sending another wave of pleasure rippling through her still-sensitive body. She tries to break away from your lips, but finds herself helpless against the intensity of the desire welling up inside her.)

Don't.... Please.... We can't... We have to... Wait until after the hour is up....

Aaaagh! Noooo! Not there! Anything but that... Oh God... I can't.... It feels too good... I'm going to lose control.... You promised you wouldn't thrust, you promised we were just going to sit still and wait for the hour to be over....

Her breath comes in ragged gasps as he begins to move within her ass. The tightness combined with the sensation of fullness from his cock stretching her so thoroughly makes her moan in pleasure/pain, her entire body trembling with the effort to stay still and keep quiet. Tears stream down her face, mingling with sweat as she fights against the wave after wave of pleasure assaulting her senses, each thrust driving her closer and closer to another orgasm that would end everything....

Her body arches involuntarily as he begins to kiss her neck, his teeth scraping lightly against her skin. She tries to muffle the moans escaping from her lips with a fist, her other hand tangled in his hair as she thrusts herself against him in desperation, seeking some sort of release from this unending torment of pleasure. His words only serve to fan the flames, the realization that he's so turned on by looking at her sending heat spiraling through every part of her body until she can barely think straight....

Her moans grow louder, her hips beginning to move erratically against his as she tries desperately not to lose control entirely and beg him for release. He's so close, she can feel it in the desperate rhythm of his thrusts, the tightness gripping her ass as he holds back from letting go completely. She closes her eyes, trying to focus on anything but the pleasure-pain coursing through her body, but it's impossible when every nerve ending is lit up with his touch, his words burning into her skin like branding irons....