Take it slowly...at first.

It takes restraint, but you manage to keep yourself from simply ramming your cock home. You put the head of your prick against the tight ring of muscle and ease forward. Ashley takes in a deep breath, and her whole body tenses. “Ah,” she says quietly. “Ah…oh, God.”

Entering her comes suddenly, as the resistance from her ass gives way without preamble. You surge into her by a couple of inches, making Ashley squeal. Her flesh grips you tightly, burning hot and slick with your spit. You keep on the pressure, driving deeper until you’re completely inside her.

Ashley pants, her sides visibly expanding and contracting with each breath. Then you begin to fuck her. You do so slowly at first, and then pick up the pace as Ashley’s anus stretches to accommodate you. The girl makes quiet, mewling sounds, her splayed fingers grabbing at the desktop as you take command of her ass.

Within a matter of minutes, you’re hammering away at Ashley’s backside. The friction of her tight asshole is delicious, and a climax begins to boil up inside of her. You think Ashley might be crying, but you can’t be sure. Your orgasm also comes, weaker than your last, but no less satisfying. You empty yourself inside Ashley’s bowels. A grunt escapes your lips.

Sweat drips from your skin. You ease back from Ashley, your rapidly softening cock slipping free of her used anus. Ashley whimpers as you leave her.

Falling back into your chair, you can see clearly the white ooze of your come in Ashley’s stretched asshole. The girl stays where she is, resting on your desktop, as spent as you are.