Casual Hookup at Work

I’m a nurse in my 30s, dating casually but nothing exclusive. Last night after work, I met someone online and agreed to a casual hookup at the hospital where we both work. We slipped into an unused room on the fourth floor, knowing it was quiet late at night. She’s tall with long legs; she wrapped them around my waist as soon as we were inside. The sound of her wet pussy rubbing against me through our clothes was so enticing. I undressed us quickly, and when I entered her, it felt like heaven, her tight walls squeezing around every thrust. We fucked hard until one of the night staff walked by outside the door; we froze for a moment but finished quickly before anyone could interrupt.