How do u want a girl like u back? And I really like her but I don't know she will like me back.

I like this girl she go to my school we always talk on call or at school
I always like her was I see her the first time but I don't know she like me back and she is bi and I'm bi but she is my best friend and I like her but I think she don't like me back and lest year she do like me but I don't know she like me now. How can u want a girl like u back?