Unsinkable Ships

[[Chapter One COMPLETELY rewritten.]] Harry and Hermione have always been close--two thirds of the legendary trio. Nothing could tear them apart. Now, a couple years out of Hogwarts, the three are living in a flat just outside Diagon Alley. And their friendship is being threatened--by something that must be acknowledged before it can be dealt with. It is the line that was drawn years ago, the line often thought about but never mentioned. And just what will happen if it is crossed? [Not a song-fic.] Rating subject to change.