His left arm is wrapped across her back, holding her steady as they kiss in the empty lift as it makes it slow way to the top of the building. He feels her hand grasp the wrist of his free hand and guide it under her skirt, and he smiles against her mouth as he follows her lead. He reaches up to find the cotton of her knickers and rubs his fingertips up and down her slit a couple of times, eliciting a shiver of pleasure. He pushes the material aside and she moans when his slightly rough fingertips stroke up and down her soft skin. After a moment he pulls her knickers down, leaving them to slide down her shapely legs, and she shifts to give him better access; obligingly he pushes two fingers between her pussy lips and begins to stroke her. Her juices begin to flow as he finger fucks her, adding a third finger after a few minutes.
"Please," she gasps, and he guesses she's getting close to orgasm.
He presses her body more firmly against his, knowing she can feel his thick prick through his thin slacks, and pushes his fingers deeper, twisting and turning them inside her slick heat as he continues to kiss her hungrily.
"Oh god!" She shudders as her release comes, and he feels her juices coating his fingers as he strokes her through the aftershocks of her orgasm. She leans her head back against the lift wall and he buries his face in the crook of her neck, then eases his fingers free of her tightly clamped muscles.