I was kind to this one guy in my speech class and also gave him a hug because he was emotional after one of his speeches. But I wasn’t the only one that hugged him. Later on in the semester he asked if I wanted to date him and I told him that I have a boyfriend 😭 (which is true) but I genuinely thought I was just making a friend in the class
Most of the time at ones work probably would make it obvious, though I imagine a lot of a thought process similar to, “Even though she’s could just be acting this cause of her job, but what if she actually does have feelings towards me”, and then take the risk anyway of asking them.