"I'm afraid about what will happen." Like what???
She's either "into you" or she's not.
It's not as if you have to decide on whether to cut the red wire or the blue wire! You're simply stating/expressing how you feel about her. If you can't be yourself or express your thoughts then she is not "the one for you.
"Never love anyone who treats you like you're ordinary."
- Oscar Wilde
In a world with over 7 Billion people rejection means: NEXT!