What should i do to get the confidence in me out?

I really like this girl at my school and there only 1 more year left of school b4 we graduate then maybe ill never see her agin im afraid to step up to her bcuz i have these crooked bad teeth that im afraid to show n im afraid she'll turn me down because of it. What should i do. i have no confidence in myself bcuz of my teeth. already tried getting brace, too xpensive to get.