Mark's eyes went wide as Emily slowly took off her pants, revealing the chastity belt she was wearing.
"Ummm, what is that?" he asked.
"It's something new, babe," Emily said. She got down on her knees and looked up at Mark, putting her hands on his thighs.
"I don't know how to tell you this, but I've been seeing someone else."
"Wh-.....what?" Mark stammered.
Emily continued looking at her husband as she ran her hand up to his leg and gently took his hard cock into her hand. She heard him gasp as she did and it turned her on even more.
"I've been seeing another man," she said. "In fact, I saw him earlier today. And I slept with him." She started to slowly stroke Mark's cock as she watched him wrestle with this information. The look of shock and confusion on his face, and the feeling of him getting even harder in her hand, was one of the most erotic turn-ons she'd ever experienced.
"I don't understand," Mark said. He reached down to pull her hand away, but Emily brushed him off gently and continued stroking.
"I'm sorry, babe, but this is the best way for this to happen. Just listen. I met him at your office holiday party last month. You were off mingling with people and he started hitting on me, and he grabbed my ass. I guess I'd had too much to drink because I let him do it."
Mark leaned back into the chair slightly, a look of shock and disgust on his face. Emily looked up at him with sympathy as she started stroking him a little faster.
"You're already so hard, babe, but there's more. After he grabbed my ass he leaned in close and told me to meet him in the back hallway. And well, I wasn't going to do it at first, but he is your boss."
"What?!" Mark let out.
Emily winced and closed her eyes.
"Babe I'm sorry! I couldn't say no. He didn't even ask. He just told me to."
"Wait, this needs to stop. What is happening?" Mark tried to get up but Emily pushed him back into the chair and kept up her stroking. He didn't resist.
"No babe. I said just listen. So I followed him back to the hallway, and when I got there he pushed me up against the wall. He put one hand around my throat and slid the other between my legs and babe I'm sorry but I was already wet for him and he knew it. He just laughed at me. He started fingering me right there in the hallway. I knew I should tell him to stop but I just couldn't. He told me to look over at the party and I could see you talking to someone across the room while he was fingering me. I started to moan and he called me a slut and oh my god babe I came right there on his fingers. I'm sorry."
"Oh fuck," said Mark as he sat back in the chair. Unable to do anything but watch Emily pumping her hand up and down his cock as she confessed to him.
"And then....," she said, "...he pushed me down onto my knees. I thought things were going too far and was going to say no but then he unzipped his pants and just stuffed his cock into my mouth babe."
She felt Mark's cock twitch. He just kept watching her.
"And then I couldn't say no because his cock was in my mouth. It was really big babe. It was halfway into my mouth and I felt it hit the back of my throat. It didn't fit all the way in like yours does. Then he put his hand on the back of my head and forced me to take more of it. I could feel it going down my throat and it just started turning me on the way he was using me. I knew a man like this deserved to have his cock pleasured and all I wanted to do was make him feel good. So I started sucking it. I took it in and out of my mouth and moaned each time I felt it in my throat. It got even harder and bigger somehow and it made me so fucking wet babe. I took his balls out too and they were so big and full. I kissed them while I looked up at him and then when I put his big cock back in my mouth I came again. I'm so sorry, babe."
"Oh Jesus Emily, why are you doing this?" Mark said. She could hear the despair in his voice as she relentlessly jerked him off. His cock had never been this hard. She picked up the pace again.
"Then he grabbed my hair and started fucking your wife's mouth. He pulled my head back and forth and just used me as a sex toy, forcing his cock down my throat again and again until he finally came. He came, babe. Right down my throat. He didn't even ask, he just did it. Fuck. Well, then when I stood up he slapped my ass again and told me how sexy I am. I felt so proud of myself. He leaned in and whispered Now I want to watch you go kiss your husband. And do you remember, babe? When I walked up to you and kissed you before you introduced me to Rachel and her husband? Well, that was it. Your boss and just used me in the hallway, and I still had some of him in my mouth."
Just then Mark's whole body twitched and Emily felt him stiffen in her hands. She immediately took her hands off of his rock-hard cock and watched as a single bead of precum oozed out. She looked up and kissed the tip of Mark's cock. He groaned.
"Oh god, what are you doing to me," Mark said.
"Sshhh babe. This is how it needs to go. You're ready for me to tell you the rest now."