I sat in the chair and watched. I was naked, my cunt was sore and I just wanted to rest. I sat with my foot pulled up onto the seat of the chair, my chin resting on my knee. The window was cracked allowing a cool October wind to blow through our room. Only the night table lamp was on by the bed, casting shadows around the room. I pulled on my cigarette and watched my husband's ass rising up and down as he pumped his cock into our secretary. A slight breeze blew the curtain and caressed my sex and sweat moistened skin.
My blonde hair fell across my face as I heard Diane scream, "Fuck me harder, fuck me harder."
Bill grunted in return. I watched as he pumped faster, skin slapping skin as he did what she asked. I drank the rest of my beer, the condensation sliding down the can and dripping onto my chest. I was getting turned on again watching him fuck her. Her legs wrapped around his lower back, her pelvis thrusting into him faster and faster.
I walked up behind him, pressed the length of my naked body into the back of his naked body. My hips moved in rhythm with his as he pounded her. I pushed my hands around his hips, pressing my palms on the inside of her thighs, feeling her quivering as her hips bucked off the mattress.
My lips were brushing the back of Bill's ear, "Fuck her baby, fuck her." I said.
I looked at Diane's face; her head tilted back, eyes closed, Bill's hands squeezing both of her breasts. "Squeeze my tits harder!!" Diane commanded.
Bill did what she asked. I watched his hands push into her flesh. I felt him pumping harder, his ass muscles clenching as he plowed into her. I watched her face and listened to her scream, "I am cumming, ohhhhh, now, here I cum!!!!"
I shuddered as I felt Bill's final thrust into Diane as they both came. I lay on top of Bill, felt him trying to catch his breathe. Bill lay off to one side of Diane, I saw the red finger prints on Diane's breasts as they were rising and falling as Diane's heartbeat and breathing were trying to return to normal.
Bill rolled over and pushed me onto my back, kissed me hard as he spread my legs.
"Thank you, thank you for sharing with me." He murmured as he sucked my nipple into his mouth.