So theres this girl..?

i am 16 and she is 15, i noticed her around school and one day i decided to talk to her. after we start talking, she really liked me. she was like i always wanted to talk to you but i never had the too haha, but then i was kinda hot and cold with her. we were chilling and we didn't kiss, (she was hinting for it) i was like sorry we didn't kiss i don't know why i didn't, so i went to her house at 1 am and had a make out session. then she invited me over when she was drunk and my friends made me go, i don't do things with drunk girls. so i pretty much told her i didn't like her.. dunno why i did that.. then i went away to italy, i couldn't stop thinking about her when i was in italy.. i came back and i was like i need to make things right. she is pretty much dating a guy who lives 5 hours away and is 20.. i told her this time i wasn't gunna be hot and wont change my mind every second day and i proved this to her by sending her a letter every second day, that lasted like 2 weeks maybe. she says she likes me one second then denies saying it.. i asked her for a goodbye kiss type thing because i was like maybe it will make her change her mind?.. things got pretty heated during the kidd.. then like she was like AHHHHH I CANT DO THIS! I AM SO CONFUSED!! after that we still chilled all the time though and had fun but kinda as friends? then i got kinda desperate and pushed her away.. last night shes like i cant do this to you anymore and we cant just be friends because you want more than i do.. i really want us to be friends but i know you too well.. i guess this is goodbye kinnon. today is the first day i haven't texted her in since i met her.. we texted non stop. first text in the morning till last. since like December.. and when i went to italy it was February.. i dont know what to do.. i asked her a couple times and she said "i cant answer that" one time she was like okay fine! you got it out of me, you may have a chance if me and josh are over.. and one time i was like you "cant" answer that because you like me still? and shes like there may be truth behind that.. and that was like a couple days ago.. and now were not talking until i am over her. thats what she said.. do i not talk to her? ignore her? how do i go about doing this.. i seem desperate but i really like her.. honestly i am desperate right now