Im in love with this girl but she wont talk to me?

ive known this girl since 7th grade but never talked to her.i tried to get her number jus recently from a friend of mine and he got mad at me and we ended up gettin into a fight in the parkin lot.well after that i finally got her number and i texted her and she went off on me and said to never text her.what the **** should i do because i really lke this girl alot and i cant lose her.....ill fight anyone for her