Late Night Fantasies at the Office...

So...I’ve been working night shifts for about six months now. You know how it is, empty streets, flickering streetlights outside, and my cubicle feels like a lonely island in a sea of darkness. My wife works during the day, so there’s no one to chat with or share stories until morning. A few weeks back, I started noticing this new guy at work, let's call him Marcus. He was always here around midnight, just when my shift starts. It’s not like I’m hitting on him... but every time he walks by my desk, there’s a certain something about him that makes me feel... different. I mean, he’s good-looking and we chat sometimes, but it's just small talk, right? Then one night, late after everyone else left, we were stuck in the building because of an elevator malfunction. We ended up waiting together for maintenance to arrive. The silence between us felt like a whole conversation unsaid... And his eyes...they seemed to be saying more than words ever could. Ever since then, I’ve caught myself thinking about him way too much. It's not just physical attraction; it’s the thought of being seen and understood by someone else in this crazy nighttime world we’re both trapped in. But that night, as we waited for help to arrive, there was an unspoken promise hanging between us, an understanding that maybe there could be more if... well, you know what I mean. So now I’m stuck here, wondering if I should tell my wife about these feelings. Part of me thinks it’s harmless and just a phase, while another part wonders if I’m crossing some line I shouldn’t even think about. I feel torn between the safety of home and this strange pull towards someone else. What do you all think? Am I an asshole for having these thoughts...or is it okay to fantasize about others when you’re married? And how far should I take it before I need to come clean with my wife? I’m kind of lost here. Any advice would be appreciated...