Tell her the truth

"I uh, was working on some stuff I couldn't get done during the day..."
"Oh, ok"
"Yea... and then on my way out as I turned the lights off I noticed Dan's office light was still on."
"Oh? And then?"
"Well, I went over intending to just go in and turn it off but heard noises... I saw Dan.."
"Yes..." she said, expecting me to continue.
"I saw Dan fucking Gina."
"Who's she? The young receptionist, right?"
"Yes, that's her."
"Well," my wife laughed, "you did say she had no experience, I guess we now know how she get the job!"
"Yea, I guess she's going to be around a while now," I replied.
"What's that joke, Confucious say 'receptionist not permanent fixture until screwed on desk', Dan's sure making sure she's screwed down hard."
"He sure is, he was really giving it to her, and his dick was huge, I don't know how she fit it in, she's so small. "
My wife had begun stroking me as I told her the story and now pulled out my cock from my pants. As she did, the unmistakable smell of cum was in the air. I'd not bothered to clean myself off.
"What the fuck, you've cum, haven't you? Did you go and join in?"
"No, I swear, I got out of there and came straight home."
The sudden slap to my face clearly indicated my wife didn't believe me.
"Okay, so I watched for a while, and when Gina saw me she started stroking her tits while staring at me."
My wife glared at me. "And?"
"Well, I came at the thought of her sucking me. I'm sorry."
My wife looked at me, right in the eyes, for a few moments before responding, "Hmm... I guess I believe you... I can't believe were watching them and jacking off though. You're so bad."
"I couldn't help it, I just got turned on by it."
Silence
I slid my hand down under my wife's panties, to find she was wet. Very wet.
"Okay, so just hearing about it turned me on too," she confided. "I guess I can see why you'd have been even more turned on, actually seeing it and all. Sorry"

I slid my fingers into my wife's slit. First one, then a second and third easily followed; a testament to how wet and aroused my wife was. I began to stroke her vigorously with my fingers.

"Fuck, that feels so nice baby", my wife cooed.
"You're so wet babe, you really like thinking about them huh?"
"I... yea I guess I do, it's so... naughty... and she wanted you to come in and fuck her.", my wife continued.
"Really? You think so?"
"Oh yea, if she was watching you and playing with herself. You could have fed her your dick for sure."
"Oh, well, maybe I'll do that tomorrow night then!" I quipped.
"Right, you'll do that huh? I don't believe you. If you were going to you'd have done it then and there."