Why do they call crushes crush?

I walk by you and start to blush

You smile at me and I think I died inside

I realize you smiled at her and I start to cry

Meaning of crush is they crush your heart

They mess with your feelings, tear you apart

Every creature is beautiful in its own way.
Like a beautiful rose or a daisy.
Both are beautiful, but in different way.
Therefor its just nonsense if we have one type who is marked as beautiful
You are beautiful in your own way.