What happens to between me and my best friend now?? could she develop feelings for me?? *HELP* 10PTS!?

Ok so i have a best friend and we are both 17 last week we had a fling () and we are still friends. we both heard what could happen to us and our friendship from past fwb relationships and we said we wont let it happen to us, and all and i told her i had developed feelings for her, she told me she was proud of me telling her how i felt, but she didnt feel the same way, she told me that she could in future though, things are not awkward between us now because we had a big talk about this before, our conversations and everything are normal and all that, would she be a true friend because things werent awkward between us? and she said that she would never leave me?? do you think she could develop feelings for me in future?? she told me she felt bad for not feeling the same and i told her not to because whatever happens happens and we are friends after all right?