He goes.

He finally takes the hint and suddenly leaves. Within a second your hands are all over each other's bodies and your lips are locked against each other. You're both whispering incoherently to each other about how much you've needed this how much you've both thought about it, how you thought he'd never leave. Soon your clothes have been ripped off and she's riding you, hard. Her body is already dripping wet so there's no foreplay needed, or wanted. She wants you in her and you want her on you. It takes only a few moments for her moans to start. Part of you hopes Duncan was already out the building before, but the majority of you doesn't care. Her tight body grips your shafts as she bounces over and over again on your lap as you sit in your plush office chair. Your hands dig into her waist as you push her up and down. After an age you eventually switch which way she's facing and go again.
You're certain she's came at least a few times as her moaning as heighten a few times, but over all its remained fair constant. Both of you are panting heavily but neither show signs of slowing. It's not passionate and loving but it is hot. Eventually you pick her up and almost throw her butt onto your desk after sliding all the random papers you'd got for her to sign onto the floor. Soon you're back in her and you're both moaning in unison. Her legs wrapping around you and you fuck her.
Suddenly the tension inside you is reaching a peak and you simply push all your weight onto her hips with your arms as you cum deep inside of her.
Neither of you move for what seems like an age, both just panting an revelling in the post orgasm haze.
Eventually you both pull apart and start to get dressed. Not a word is spoken before she is fully dressed and opening the door.
"Uh... See you around...?" she raises as she turns around to you.
"Sure." You reply and just like that she's gone and you fall back into your chair exhausted.