Girl 1000 miles away? Dont knw wat to do.?

hi..im 17..and ive been talking to this girl for about a year through texting and calling...ive nvr felt such a strong feeling for a girl in my life..i usually give up. but this time i wont i love her..she is an angel..i havent found a single thing wrong with her, she beautiful, fit, funny, smart, sweet, and just overall amazing..ive already told her i love her and care about her and in the past she thought it was sweet and wanted to kiss me and cuddle and wat not..but now she doesnt feel the same..everytime i ask her she always says stuff like if she liked me back..but she wont say it and i dont even knw if she does...so i wanna knw if anyone has an idea to change her mind..because im defiantly not giving it up..and dont say give her up, or find a girl close cause im not gonna and ill be the one to decide when to stop