Revealed my feelings to my bestfriend?

I had told my best friend that i liked her and at first she said she didnt want a relationship and to remain friends. A month later she told me that she had also started having feelings for me. Problem is we were leaving college and weren't gonna see each other for 4 months. My feelings have stayed the same over the summer but midway through she told me she didnt feel the same way anymore. It sucked and im tryin to get over it and still remain close with her. any ideas?