Barista Kink Confession

I've been working at the same coffee shop for three years now. I'm thirty-two and have a steady boyfriend of four months named Alex who is in his late twenties. We get along well, but we haven't really explored any sexual interests that might be off-the-wall or unusual between us. Recently, though, while making lattes day after day, this new kink has been gnawing at me, the fantasy of a customer coming into my coffee shop and asking for an unusually intimate service. I'm not talking about just a tip slip; it's more like some kind of barista/coffee fetish. When I picture it, there are a few customers in the café watching us interact while we prepare their drinks, but none of them would step in unless given permission. Alex doesn't know any of this yet. Part of me feels like I should tell him, maybe even see if he's down to try it out as a roleplay scenario. But another part of me is scared he'll think I'm weird or that I don't trust him enough for such an intense dynamic. Today, while working late into the evening, a customer came in looking rather desperate and ordered a decaf cappuccino with a whispery voice saying 'Make it slow. Make it perfect.' I could feel my heart racing as I started pulling this order together slowly, watching him sip it and stare at me over his cup like he was waiting for something else to happen. After that, I went home early. Lying in bed, I couldn't stop thinking about the way our eyes met and how close we came to more than a coffee exchange. It felt dangerous, thrilling, and incredibly wrong, yet strangely right at the same time. Alex was confused when I got home early without saying much. He asked if everything was okay with work, but I didn't feel comfortable talking about it yet. My fantasy isn't something that can be easily explained away as 'it's fine,' either. The more I think about this barista roleplay idea, the stronger my desire becomes. Now here’s where things get tricky and I need your honest opinion: Is it normal to want a customer service job not just for its regular paycheck but also for the unexpected sexual connection that might happen in a place of work? Should I tell Alex about this fantasy or should I keep it secret and find another way to explore my desire safely without putting myself or my job at risk? What would you do if you were in my shoes?