Late Night Fantasies

I work nights at this dreary warehouse. Sometimes when everyone's asleep and it's just me with my thoughts, I indulge in some pretty wild fantasies about a coworker who has no idea we're anything but professional colleagues. It’s not like either of us are looking for something extra, right? But still, every night it happens, I slip into these daydreams that leave me feeling ridiculous and secretly hopeful at the same time. Am I just nuts to think maybe... someday? What's normal in a marriage anyway?