My glans pushed into the tight, warm entrance, and soon enough, I was all the way in.
"Damn, this feels amazing!" I couldn't help but blurt out, my left hand busy with Grace's pussy while my hips pounded away behind her.
The sound of our bodies colliding filled the office again.
My right hand gripped her shoulder as I thrust hard and fast into her, obscene fluids spilling out and running down her legs, pooling on the floor.
The wet floor reflected the sunlight, casting a tiny rainbow on the glass.
"Slow down... I can't take much more," Grace pleaded.
I ignored her and continued to thrust into her tight hole, my eyes locked on the reflective glass.
In the glass, I could see Grace's flushed face, her lips bitten to stifle her moans, but she couldn't hold back against my relentless thrusts.
Each powerful thrust forced a moan from her mouth, driving me crazy.
It felt like all my blood was rushing to my lower abdomen, and even if I wanted to stop, I couldn't fight the urge to keep going.
After about three hundred thrusts, Grace slipped from my grasp. She turned her face to the side, pressing her cheek and shoulders against the glass.
Her soft breasts occasionally slapped against the window, making a sound like raindrops hitting the glass, which was oddly satisfying.
Instead of pulling her back, I pressed one hand on her back, grabbed her hand, and kept thrusting into her.
The floor-to-ceiling window started to shake slightly under my impact, and I wondered if it might shatter if I kept going.
"Please stop... I can't take it anymore. My legs are giving out. Please cum... I'm begging you." Grace pleaded.
Grace, now leaning against the window and sliding down bit by bit, couldn't control her feet in high heels, and each thrust made her toes lift.
I didn't want to thrust for too long, but when I tried to focus on cumming, it just wouldn't happen.
So, I kept thrusting, holding her hand.
After about five hundred more thrusts, Grace couldn't hold on any longer. Her knees gave out, and she slid down the window.
Finally, my cock slipped out of her, and she collapsed on the ground, her head hanging down, breathing heavily, her whole body trembling.
Grace had climaxed again.
But I hadn't finished yet, and ending it like this wasn't my style.
I straddled her back, legs apart, and started thrusting rhythmically into her pussy from behind.
Grace moaned, "Please... please stop... I'm begging you. I really can't take it anymore."
After what felt like forever, my cock finally felt the urge to finish. I pushed deep into her, and a strong stream of cum shot out, filling Grace up.
It took a good half a minute to completely finish ejaculating.
As I finished, Grace started trembling all over again, especially around her waist.
Unbelievably, after just a few rounds, Grace had climaxed three times.
I sat back on the floor, hands propping me up, knees apart, letting the last drops of cum drip from my cock.
Grace lay in front of me, her swollen, exposed pussy unable to close completely. It looked even redder than when I first entered her, the flesh slightly dilated. From my angle, I could see the tender, contracting flesh inside, looking deliciously pink.
She was still leaking cum. Some of it trickled down her thighs and onto the floor, while some oozed directly from her pussy, making a dripping sound as it hit the ground.
We rested for about ten minutes before we fully regained our senses from the aftermath of climax.
I walked over to the desk, grabbed a couple of tissues, and wiped the cum off my cock, using a total of five tissues to get it clean.
Then I picked up my scattered suit pants, put them on, zipped up, buttoned up, buckled my belt, and tucked my white shirt in.
I went back to Grace and lifted her off the floor.
Considering she had just climaxed three times, she probably hadn't fully recovered yet, so I carried her to the sofa and let her lie down to rest.
Then, I lifted her legs, bent her knees, and pressed them against her chest, flattening her chest.
I took several tissues and gently wiped off the remaining cum and fluids from her.
After using about ten tissues, her body was finally clean. I laid her legs flat on the sofa, pulled her panties back into place, and adjusted them neatly.
Next, I helped her put on her white suit pants, pulled them up, lifted her buttocks, and got them on properly.
After that, I picked up one of her high heels that had fallen to the ground, walked back to the sofa, and gently helped her put it on.
Finally, I helped Grace with her disheveled shirt, buttoned it up, tucked it neatly into her pants, and then stood up from the sofa, left the office.
As soon as I descended two steps, I ran into Emily coming out of the pantry, her face a bit awkward when she saw me.
She asked, "Were you with Ms. White this whole hour?"
"Yeah," I replied, adjusting my cuffs.
Since Emily already knew what was up between Grace and me, I didn't see any point in hiding it.