As someone who doesn't see himself particularly prone to crushes, I crushed HARD on my physiotherapist who I went to twice, last month. When he got on the bed to do a traction exercise, and chose that moment to make small-talk. Holy was that awkward (What high school I went to? Why do you want to know that?? As you are grasping my calf muscles, with your attractive face looking right at me.). My brain literally stopped as the blood flowed elsewhere, and I couldn't tell if he noticed anything. But as the days wore on when I had time to reflect on the situation, I learned to connect that experience with my general life situation (such as not socializing enough of late), as well as develop the empathic understanding that he was a real person whom I met, someone who just happened to be in a position of offering a professional service in a much more personal/caring context than most transactions we encounter. Of course, that insight came after stalking his Facebook, though.