My Secret Crush on the Regular Customer

I've been working at this coffee shop for about a year now, and there's this regular customer I really like. He always orders the same drink, a large Americano with room for cream, and he has this charming smile that makes me feel all warm inside every time he comes in. The thing is, we never talk much beyond the usual pleasantries when he places his order. I know it sounds silly to have a crush on someone who doesn't even know your name, but there's just something about him that keeps drawing me back into those moments when he's here. Do other people feel this way too? Am I overthinking it, or is it normal for someone working at the same place day in and day out to develop feelings like this?