A dirty shower

Melanie's soapy hands moved over my hard member. Covered in soap they slipped over my skin with almost no friction; in some way that didn't make sense, heightening the sensation. She twisted her wrists as she stroked me, and grasped my balls with her free hand. She leaned in and began to whisper in my ear.

"I got to your office at about a quarter past five last night baby. I figured most people would be gone, and I was right. I didn't see anyone there, but Dan's office light was still on, so I knocked on his door and went in."
She licked the lobe of my ear, making me shiver, before continuing.
"I said 'hi' to Dan as I went in, and asked him if you were still around. He said 'sorry but I think he's already left for the day.' I was really forward baby," she breathed into my ear. "I shut the door behind me and said "Good, I'd hoped no one would be here. He was surprised, but recovered quickly, just saying 'oh, really?' I think he already knew what I wanted. I said 'Yes, I heard about you... about you and Gina. About how much she enjoys the size of you,' And I lifted my skirt showing him I wasn't wearing any panties as I said 'I want to feel what it's like... in me.'"
"Oh, wow," you're a slut, baby," I replied to her. I was too aroused already to be jealous. Even though I'd said she could do him, that was when I was horny, and during the day I'd sort of changed my mind. It didn't seem like such a hot idea then. She'd chosen the right way to tell me though. With Melanie fondling my hard cock with her soapy hands I couldn't think through the fog of lust clouding my mind.
"I know, I am. It's your fault though, you brought her out," she agreed with me. "Dan was out of his chair immediately, honey. He was on his feet and over to me before I could say anything else." She began sucking my earlobe as she continued her cock massage. "He grabbed me, spun me around, wrapping one arm around me as he slid two fingers straight inside me. I was wet, baby. They slid in easily."
"Oh, shit, I bet that felt good," I managed between laboured breaths.
"Yea, I know, it felt incredible. His fingers inside me, thumb rubbing my clit, felt so good, but then he stopped. He turned me back around and pushed me down. He looked at me, kneeling before him, and I knew what he wanted, so I unzipped him and pulled him out."
"Fuck baby, was his dick big?"
"Oh hell yes, he was hard already and I swear, although it wasn't massively long, perhaps 8 inches, it was thick. It looked like it was as thick as my wrist. I couldn't quite touch my fingers together around it, baby. It was kind of scary, but hot too, knowing I'd soon have it in me."
I shuddered at the thought of my wife stroking my bosses cock. I'd seen it in Gina's pussy, and it looked enormous, and now Melanie had been fondling it too.
She knelt down before me, as she'd done to my boss, and held my dick in front of her mouth, still stroking me as the last of the soap washed away.
"I couldn't fit it in my mouth, honey. I tried but it was too big, so I just licked him. I licked up from his balls to his head and then ran my tongue around him as I stroked his dick."
She took me in her mouth and sucked me to the root. She bobbed up and down a few times before pulling me back out. "I couldn't do this to him. He was so big. He was moaning how good it felt; telling me I was a filthy slut. I thought a slut would have him in her pussy by now, so I stood up and turned around. I leaned against his desk and lifted my skirt over my hips, exposing myself to him."
"Oh, fuck, that's so hot, babe," I said, as she stood and turned away from me and leaned against the wall of the shower. She reached back and held my dick.
"I grabbed him just like this, baby. I held his big dick against my little pussy."
She lined me up then slowly pushed backward.
"It was so tight babe, his dick was so thick. He pushed into me slowly, just like this. Well, almost..."
I slid into her easily. Not like he had. Her pussy felt loose around me. She'd been stretched by a larger cock, and her pussy still bore the evidence of the size of his tool.
She began thrusting her hips back against me. "Once he was in baby, he started fucking me. Long slow strokes at first. I came. I came almost straight away, but he didn't stop."
She was bouncing her hips against me forcefully, pushing me back against the opposite wall.
"His big cock just kept going. He just kept fucking me faster and faster, until I came again."
"Was it really that good?" I asked, feeling self conscious. I'd not given her multiple orgasms more than a few times in all the time we'd been together.
"Oh, you've no idea. It was the best. I could feel my juices running down my leg. He pulled out, turned me around, laid me down on my back on his desk, and lifted my legs onto his shoulders. I was begging him to stick his cock back in. I felt empty without him in me."
"You probably still do. I can barely feel you."
"Ummm... yea. Kinda..." she agreed, "it felt so good when he put it back in me and started fucking me again. He just kept going and going and I came again. This time, my pussy clenching on him took him over the edge and he unloaded in me. He started fingering me with his cum still in me, then walked around and began rubbing his cock on my lips. I sucked him clean, able to take him in my mouth until he started to get hard again. I loved his dick so much I rode him on his office chair until he came in me again. It was so hot baby. His dick is amazing."

"You want him again?" I asked, both aroused at the thought, and dreading her answer.
"Yes baby, I do. I'm going to fuck him again for sure." I came in my wife as she answered me. "And it looks like you're okay with that," she said as she turned, smiling.