Like the title says, I've accidentally caught him staring at me as I walk by on more than one occasion, but he doesn't come near my station as often as he used to, and the last time he did, he didn't make eye contact with me at all- just stared at his phone and left. He had a lesson to teach right after he ordered his drink (I work at the snack bar inside a gym and he's a fitness instructor), so it could have been that he was busy that day and couldn't stop to chat. And I could be over-analyzing everything, too. As I once read somewhere: If I didn't like the guy, I wouldn't have bothered trying to figure out what was going through his head, I would have quickly assumed he liked me and just been irritated.
I have a tendency to over think this kind of thing; so that's why I came here to ask for a few more opinions. Also, even if he were attracted to me, you guys have any suggestions on how would I go about approaching this? I'm stuck at the snack bar serving customers and he's out giving lessons. About all I can do, and have done, is walk around cleaning tables and smile when he looks over.