As for the fact that Malfoy, Crabbe, and Goyle apeared to be going their different ways when they were usually inseparable, these things happened as people got older--Ron and Hermione, Harry reflected sadly, were living proof.
J. K. RowlingSnape's patronus was a doe,' said Harry, 'the same as my mother's because he loved her for nearly all of his life, from when they were children.
J. K. Rowling