Who was Tim is the book Dear John by Nicholas Sparks?

Tim is not a character in Nicholas Sparks's book "Dear John." The main characters are:

* John Tyree: A young soldier who falls in love with Savannah while on leave.

* Savannah Curtis: A young woman who falls in love with John.

* Alan: Savannah's childhood friend who eventually becomes her husband.

Perhaps you're thinking of a different Nicholas Sparks novel?