i really believe that we choose our friends, subconsciously or consciously, since its a relationship which doesnt exactly have an eternal bond.
some appear from around you and they grow in importance,
some come from your own initiative, or the other party's,
or the most unexpected places.
therefore, not good to expect too much?
since its that easy to break, though its difficult to build.
maybe the one time this statement gets really proven wrong, perhaps will mean your friend is really special and dear?
and it'll last.