Stories focusing on the Master & Apprentice relationship between Qui-Gon and Obi-Wan.
My take on Aragorn's and Legolas' friendship.
Sirius and Remus. How they met, became friends, grew to doubt and mistrust each other, and later, forgave the mistakes of the first war against Voldemort.
Not much to say here - one story focusing on Chris' and Leo's relationship.