Im confused i dont no what to do?

Ok so im 14, and started going out with a girl when i was 11, at the time i only went out with her because i never had a girlfriend before but then i grew feelings for her. I dumped her in June 2008 but i took her back we lasted a bit longer until November 2009 when i dumped her again. She says she still has feelings fo me but i don't know if i hve feelings for her because i dont think im straight. either bi or gay i don't know. And now she has sent this message saying she still has feelings for me and i don't kow how to reply. I think her picutres are pretty but in the real world im not attracted to her