Your coworker

Your wife smiled and then turned around. She knelt in front of your coworker, and he looked down as she took off his pants and pulled down his underwear. Her head blocked your view of his large black cock, and you couldn't help but move closer for a better look. As humiliating as it was, you still had an erection as your arousal refused to subside.

Your coworker's cock was in your wife's mouth by the time you reached the edge of his desk.

"She has a talented mouth," he said. "You're a lucky man."

Your wife took his cock out of her mouth and looked up. "I don't suck his cock. He doesn't deserve my mouth. A man like you deserves my mouth."

She resumed sucking his cock while your coworker looked at you and flashed an arrogant smile. You couldn't blame him. Your wife had just told him he was a better man than you, and she was proving it by cheating on you right in front of you.

"It's a shame you couldn't give her what she wanted," he said. "I imagine you'd be a very happy man if you could. I guess some men just don't deserve a woman like your wife, though. I guess you don't."

You sat down and watched as your wife's brunette hair gently bounced while she sucked your coworker's cock. You listened to the sounds of the blowjob and the noise of her hand moving up and down his slippery shaft.

Eventually, your wife stood up, turned around, and bent over your coworker's desk. She smiled at you as he positioned himself behind her, pulled down her panties, and slid his cock into her vagina. She closed her eyes as lust washed over her face and a low moan escaped.

"Fuck me," she said.

Your coworker gave your wife what she wanted. He fucked her from behind, starting slowly and then picking up the pace, presumably to give her some time to get used to his thick cock.

"Take your cock out, honey," she said. "I can see you're hard. I know you want to jerk off. Just do it. Admit that it turns you on to see your coworker fuck your wife, and take your cock out."
You unzipped your pants and took out your cock. There was no point in denying it. They both knew you were excited.

"There you go," she said as your coworker increased the pace and thrust harder. "Now masturbate while he fucks me. Enjoy the fact that your wife has found someone better."

"That's right," your coworker said. "She's mine now."

Your eyes widened, and your wife smiled.

"He's right. I'm your wife, of course, but now I'm his. I'm even going to the company Christmas party as his date," she said.

That's when you came. You couldn't help it. The orgasm swept over you before you could stop stroking. It rushed out of your body, and you spilled your load all over your hand and pants. You made an absolute mess while your wife and coworker both laughed at you.

"You should really clean yourself up," your wife said. "He lasts a long time, too - unlike you, obviously - so we won't be done for a while. I'll stop by your office to say goodbye before we go out for lunch."

You couldn't even look at her. You tucked your cock back into your pants, grabbed a few tissues from the drawer of your coworker's desk to wipe the semen from your pants, and left his office to head to the bathroom to clean up the mess you'd made of yourself.