It is always hard to let go of a love of so long. If you are still friends with her and find it impossible to forget the love that you have for her tell her that it would be best if the two of you dont hang out anymore. If you want to remain friends with this girl you are going to have to find it within yourself to let the love go and know that you can only be friends. The man I will soon call my husband has been a friend that I have been in love with for four years and he told me two years into the friendship that he loved me. I always just kept being his friend. Therefore your first move is to find out within yourself what it is that you truly want out of the friendship.