Panic anxiety attacks around crush, is this normal?

Every time I see my crush in a place that I do not expect to see him such as ( the county fair , Wal-mart, at the mall , in his front yard (yeah, you think I'd expect him there) , McDonald's etc. ) My hart rate goes from about 60 bpm to about 80 bpm, I begin to sweat, I start hyperventilating and I freeze-up in fear and forget what I'm doing. It's the same reaction I would probably get around a serial killer who's after me.

It gets even worse and I start breathing harder when he notices me there too and starts to stare.

Why dose this happen ?

How can I make it stop?
Panic anxiety attacks around crush, is this normal?
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