I haven't had my first kiss with a guy and i'm 20 how should I overcome this before 21?

I am really attractive and a really nice, fun and person to be around with but the only think i'm insecure about is my teeth which is perfectly shaped and all but since before i came to the U.S. i was born in another country where the water led to me having dental florosis, or a minor caramel color in y front teeth. it's unnoticable from 10feet away but the rest of my teeth are whiter than some people. SO I AM INSECURE ABOUT IT AND CONSTANTLY THINKING THAT A GUY WOUDN'T WANT TO KISS ME BECAUSE OF THAT. DO GUYS CARE IF THAT IS THE CASE FOR A BEAUTIFUL WOMAN..WHO IS GOING TO DO SOMETHING ABOUT IT LATER ON AFTER COLLEGE? & SHOULD I BE UPFRONT ABOUT ITAND ASK THEM IF THEY HAVE A PROBLEM AND EXPLAIN? THANK YOU
--------------------
You want your first kiss to be with someone who cares about you and like you and your personality more than some stupid tooth discoloring. Don't stress out about it, just let it happen when it does and in the meantime build your self confidence back up, you already know your beautiful, if the guy can't see through something as minor as a little tooth discoloring then he's not worth it anyway!
Source