Don't look at me when I cry

How is it that two people, who shared countless days full of fun and laughter, end up being strangers... Which one desided to let the other one go? Maybe we wern't that great of friends... I guess that I made it out to be more than it really was... I just don't understand... she taught me so much about life and friendship and to "make new friends, but keep the old, one is silver and the other gold..." then she disapears... god I am so stupid... hanging on to this, she has been gone for almost 4 years now, but it hurts just as bad as the day she left... I have issues...