Letters and Life (Marauders)

Lily Evans and Katherine Jameson Have been at Hogwarts for two years and everything has gone smoothly, They're at the top of there class, They got into Gryffindor, and made friends. But then everything changes. When Kathrine gets a letter that will change her life and Lily agrees to go on a date with the one and only James Potter. Rated T just in case. Sequel: The girl who lied