Your fingers slide over the keys.
She moans softly.
You lick your lips and blink a few times, focusing. You need to concentrate on this, despite the prickling heat that is building.
Your touch is light as your fingers brush back towards those vital buttons, and you once again slip into the same old rhythm: up, right, left, right, up.
Contentment swells from a sigh beside you, and you catch a glimpse of movement from the corner of your eye. It's working.
"Yes..." she purrs. The delicate, fruity musk of her perfume hangs heavy in the air, subduing and intoxicating. You can only comply.
You move shift one picture towards the other on the sixteen square grid, and a throb courses through you as you successfully combine two of the larger figures and they meld into one. You note that this is already promising to be a better run that last time, as you feel something soft begin to press against your elbow.
"Oh, oh, more... More..." she croons. Her eyes are closed, so she must be enjoying this a lot. She normally can't keep her eyes off them, but before you look back to the screen you hear a whimper and see that her hands have slipped downwards.
As you slot more and more of the pictures together, the pressing against your arm becomes more persistent, and the soft firmness begins to push upwards. A stitch pops, and then another, and you feel yourself begin to ache, mouth dry. As if sensing your hesitation, she lets out another moan, and you feel the bed shudder.
"Bigger." The word whispered echoes across the ether and through you, and you feel your blood pumping. You eagerly increase your computations, blinking rapidly to try and maintain precision. A button pops on the front of the silk negligee she's wearing, first one, and then another as she intakes a long, ragged breath.
A button lands, on the keyboard, and you look to your left beside you, you can't help it. Past the flesh pressing into and now slightly over your left forearm, you see a spectacular sight. Her hair tousled around her, mouth lightly open and eyes closed, your girlfriend lies on the bed beneath her magnificent chest as it heaves slightly but rapidly. A groan escapes her, and before your eyes the shirt she is wearing splits open, revealing mound upon mound of perfect, supple breast, quivering in the light of the screen. With each inhalation her chest rises, but falls markedly less with every exhalation. Slowly but surely it is rising, expanding, filling... growing. The last button begins slowly to tighten.
Unbidden, your left hand moves towards a nipple, already hard and puffy, peaking with dark excitement. You know you have a long way to go before the game is over, but the temptation is too great. However, before your hand has finished its ascent, the movement sending ripples across the expanse of titflesh, she breathes in suddenly and you feel her hand begin to work faster beside you.
A light dampness touches your thighs, warm with honeyed sighs and caresses.
"Please don't stop, please," she begs you. "Not yet, ple-" she interrupts herself with a loud, high moan. "Uh! I'm getting so big!" It may be her breathing quickening, but her chest seems to swell just a little faster, as if to remind you of the urgency of the matter.
It's too much for you - almost. You know that you can go further, and your zeal returns as you work at the keys, hands darting back and forth. Your erection is iron, and only seems to harden further with every little jolt her fingers, and now her breasts also, make on their fastidious expansion.
When you first told your girlfriend about your fetish, you were nervous, expecting the worst. Though at first the idea didn't do too much for her, the story has altered somewhat now...