Ties that Bind

Lily summoned herself a "friend" as a child, innocently enough and unbeknownst to her. Later, she chooses to forget the true nature of her friend, no longer believing in "imaginary friends." When she repudiates her friend in their fifth year, she "gives" him to Dumbledore to make him stop following her around. [HG/SS] AU/CRACK (COMPLETE)