When I smile I'm ugly.

is it possible that I'm really beautiful when I don't smile, but when I smile I turn ugly? its just that I never used to smile because I had braces (my teeth are perfectly straight and white), and when I got them off and smiled for the first time my crush stared me in the face and started laughing. so..is it possible to have a really ugly smile even tho I'm pretty ok looking when I'm straight faced?
When I smile I'm ugly.
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