Should I see her?

Hi everyone! Thank you very much for helping me out! Here's my problem as summarized as possible: A couple of years ago, I was living abroad and I fell in love with my best friend there (who was also living abroad), but I never acted on it. I came back home and then she came to visit last year (as a friend only). Again, I didn't act on it until the last moment, when I decided to tell her I was in love with her right before saying goodbye, because while she was visiting she did and said stuff that made me feel like she felt the same way. She cried a little bit and stuff, but that was it. Then we kept on texting and all that and she gave me a LOT of signs, sent me love songs, etc. So I sent her a letter telling her how I felt again and asking her if she ever felt the same way. She told me she loved it and that she would reply in some time, but never did. We continued to talk a lot. Now, I'm going back to where I met her and she told me she's very happy and that we have to see each other. Thing is... this is the first time ever someone has broken my heart, I'm still not over how I feel and, considering the way she acted after receiving my letter and how she never replied, I understand she doesn't feel anything for me. A part of me is dying to see her again, while another part of me tells me I should not see her. What do you think I should do?

Move on with your life and see her when you are happy too.