My Secret Kink Is Tied Up At Work

I'm a barista at a bustling coffee shop, and lately I've been struggling with this secret kink of mine. When things get hectic at work and there are multiple customers waiting in line, I find myself getting aroused by the idea of being tied up to one of those little metal bars we use for carrying plates between counters. It's absurd and scary how the thought of not being able to move during a rush makes me feel turned on. My partner doesn't share this kink at all. Every time it happens, I feel so ashamed and guilty. Part of me wishes there was some way to explore this without having to leave my job or my relationship.