Is it normal i feel so intensely about a teacher

I'm a 17 year old junior, I'm black and he's caucasian. He teaches an elective I'm in but I'm not one of his students. I chose the elective last year, oblivious to the fact that he taught it too but ended up getting wind of that also last year.

When I learned he was one of the teachers for it, I somewhat anticipated being one of his students but was also nervous as I thought he might have disliked me. The only reason I thought and think this is because he bumped into me when lunch let out and said sorry, I gave no response. But I'm shy, so that's typical for me.

I'm not really sure why he has the effect of making my heart react a certain way when he's in my vicinity, at least since the mini incident I just described. I haven't had the best experiences with men, so that could have something to do with it. He certainly doesn't look bad either but I know that's not the reason I originally noticed him since before I didn't really care much for him. From what I hear, he's a gentleman and he seems nice.

This school year, the first two days I saw him during sixth period lunch like I did when I was a freshman, I think those first two days I may have made it a bit obvious by acting nervous because I sat somewhere near him. After those two days went by, my lunch period was changed to seventh period. However, another thing that changed was my English class, I had and have it sixth period but it use to be nowhere near the cafeteria. Since being changed, if I were to go to the bathroom during sixth period, I would come near the cafeteria and likely see him standing around near it.

He's often talking with other teachers but once it was just him pretty much reclined against the wall, he took a glance at me then looked away, just that sort of made me happy essentially since he looked at and acknowledged me, I'm the type to seem invisible to most.

I'm honestly relieved I'm not in his class, since this is more of an admire from afar affair and being in his class everyday would sort of ruin that. I'd much prefer to keep my distance, I might try something when I'm no longer a high school student or not and just be content he'll probably find someone he'll be happy with, if he hasn't already. I Any advice?
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