Dear Former Best Friend, Hi. I know I haven't spoken to you in years, but this friendship break up letter is the best way to say everything I wish I had said the last time I saw you.

My friend, I still love you. I still long for our friendship that once was extraordinary and invincible. Yours truly, Your former best friend. RELATED: An Open Letter To The Man Who Didn't Fight ...

A best friend's touching farewell letter to a slain Sandy Hook pupil went viral on the Internet on Tuesday, encapsulating in a few words the shock and sorrow of a nation.