Confused About My Impulse at Work

I’ve been in a committed relationship with my partner for two years now. We communicate well and both have healthy sexual relationships within the confines of our monogamy, or so we thought. A week ago, I found myself sneaking into the break room during my shift because someone new started working there, he’s twenty-six, tall, and has a physique that made me feel things I’ve never felt before at work. As the manager saw him, I was already blushing hard enough to be noticed by everyone. But then it happened: while making my rounds in the storeroom for inventory, he asked if I needed help reaching something high up. His hand brushed against mine as we passed each other and his scent enveloped me, all musky soap and subtle cologne. In that moment, I had to physically bite back a groan as an intense wave of arousal hit me like never before. My breaths came shorter, my chest tightening with a desire to explore every inch of him. This was beyond what I felt for my partner; it was primal and consuming. That night at home, I replayed the touch over and over in my head until I couldn’t stand it anymore, I found myself wanting more than just the imaginary part: I wanted to taste his skin, to feel him inside me. Is this common or is there something wrong with me? Am I straying from what’s healthy?