Friend help?

I’ve have a friend who I had a crush on. She knows I had a crush on her and got friendzoned. I’ve begun to “love” her more and more as time went on but then she basically avoided me after I was honest about how I felt when she bailed on something. Anyway she’s really important to me but according to my friends, it’s a toxic friendship. I’m pretty sure she hates me now..any advice?