Date a couple of times before saying anything. Get to know each other a little more. Then when you feel that you really like each other (even if it turns out to be just a friendship) tell her what characteristics she has that attracted you to her such as, she's cute, pretty, has a great personality, you love her laugh or how friendly she is to others and how easy it is to talk to her. All people love compliments.
tell her exactly what you feel
It usually means the girl has an ignorant and a mean personality. Try ignoring her, or confronting her, telling her how you feel.
if you do it in the non creepy way
How could you get a girl that has a boy to go with you? by telling how you feel about her
Tell her the truth about how you feel about her. Don't leave out details, and don't feel rejected by telling her everything. The girl will appriciate it if you just come out forward and just say how you feel, even if it may be hard for you. The girl will respect your feelings (well she should!) and its sweet when you "confess" about your emotions. It's sweet.
Just tell her how you feel about her.
If you just like her, it is acceptable. Do Not say "I love you." over a phone. Telling your feelings is always better in person anyways.
Whatever you feel like telling her.
my way it will be texting her but also just telling her if you have guts
They are really careful because if the girl doesn't love them back they will feel completely embarrassed.
Be yourself, don't care too much about your looks, be honest with her and don't be afraid of telling her what you feel.
I'm not telling you that!
Ask her why she is doing it and ask her how she would feel if you did the same.