What If...

I'm not having a great day.
There's this guy at my school, and I know this sounds stupid, but I feel like there's a connection between us. Every time I look at him, he's starring at me. Not like a glance, but watching me!
I don't know what to do. It scares me that he might end up with someone else, but I don't know how to confront him to tell him how I feel. I mean, what if he doesn't like me? What if he thinks I'm weird, and that's why he looks at me? What if I'm not good enough for him?