Caught in My Job's Dark Secret

I'm married with kids and have been working at a busy retail store for years. It started when I noticed one of the newer employees, Alex, always seemed to linger near me during shifts, their eyes never leaving my body. Initially, I ignored it, but as time passed, I realized Alex had developed a crush on me. At first, I was uncomfortable with the unwanted attention, but then something shifted inside me. One day, when we were alone in the storeroom organizing stock, I felt that familiar tingle between my legs. The longer our eyes met across the room, the harder it got to pretend there wasn't anything going on. Alex eventually admitted their feelings and proposed a game; we'd explore our attraction but only as characters from different universes who never existed in real life. We agreed. That night, after locking up late, I found myself alone with Alex in the dark storeroom. The air was thick with anticipation, and when our lips met, it felt like an electric shock. There were no more words exchanged; we let our bodies do the talking. As Alex explored my body, fingers pressing into my skin just right, I moaned his name and pulled him closer. We moved to the floor, a blanket of cardboard boxes our bed for the night. Kneeling between my legs, Alex looked up at me with a hunger that mirrored mine exactly. In one fluid motion, he entered me, stretching me open, filling me completely. Our movements were frantic and raw, each thrust hitting just the right spot to send waves of pleasure coursing through us. The next morning, as I dressed in hasty silence before returning to work, a piece of me wondered if it had all been a dream. But then, glancing at Alex's satisfied smile across the room, I knew it was real and terrifying. This secret has grown with every shift we share, each hidden glance or lingering touch threatening to be our undoing. I don't know how much longer I can keep this up from my spouse.