Part III: Monday

The next day Karen had woken you up with a blowjob ("This is thanks for fucking me back to a good little girl," she'd said as she stroked the length of your shaft with her tongue), and had then mounted you. As her warm pussy massaged and tightened around your hard dick, she leaned in and whispered, "Thank you for using me baby," each time as she slowly thrust you in and out of her. Her deliberate pacing and the submission in her whispers had driven you crazy, and you were moaning and jerking your hips uncontrollably, feeling your precum leak out in a stream. You felt your orgasm build up in your cock but just as the wave was about to crash, Karen suddenly hopped off your dick.

You let out a strangled moan of protest as your dick throbbed unhappily at being out of her pussy. Karen just grinned at you impishly, "Look at the time, babe, I'm gonna be late." You both knew this was a lie. "Guess we need to finish off in the evening. I need more good girl lessons, don't you think?" Then with a wink she walked away, making sure to swing her ass with every step.

So here you are at work, your balls sensitive and uncomfortably full, as you try to focus on your task with little success. Your phone buzzes in your pocket. You know it's Karen without looking. Her morning antics alone aren't the only reason you can't work.

You check your phone and are welcomed with a picture. It's a familiar view of her pussy, spread apart by two fingers in a V shape. You can glimpse some grool at the edge of one of her lips. Her skirt is pulled down to her thighs, but you don't see any panties. She must be in the toilet at her office. "I'm going commando for the rest of the day," she wrote under the picture. "First guy to look up my skirt gets to fuck me."

"Guess I already won then," you text back.

"Oh no, darling. I meant look up my skirt in person. Did you really think I was going to make it this easy? So be good and come home quick tonight, otherwise I might get bored and go for a walk. Supposed to be a nice windy evening."

You sigh and try to get back to work. Karen had been teasingly edging you all day with her suggestive texts and pictures. You had a surprise up your sleeve however. You were close to finishing your project well before the deadline, and your boss was willing to let you leave early. This time you'd be home before her for once and you're looking forward to sexily welcoming her back. You remember your spandex swimming trunks and how well it outlines your cock. There'll be no foreplay tonight, you think grinning.

"Thinking of something nice?" Kate breaks in smiling, standing by your desk.

"Just something Karen said," you say. "It's not important."

"Oh," she replies, her face darkening slightly. "Anyways, just wanted to remind you to send the projections over before you leave."