Can I continue to love her?

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Five years ago, she and I met each other, then love.because we didn't live in the same city,So we love very hard,the opportunity to meet only once a week, but I do not care about distance to our difficulties,I think she don't care too. three years ago, one day,she suddenly call me ,talking about a very good man love her, she decided to accept it, she decided to leave me. I very painful.I really love her, I really can not forget her, therefore, after three years ,I'm alone. During the past three years,many girl want to be my girlfriend,but I refuse, because I know that I never forget her. Yesterday,She suddenly for me to the phone and said she is a single, inside the phone, she cry.She said still feel my best and wish to re-together. My other friends say that the girl did not deserve to love.But, in my heart, I really love her! should I also continue the relationship?