My nana told me
in a letter she once wrote:

friends
come into
your life when
they're needed
most.

they stay
for weeks, months
years even. And go
when both of you have
given each other all
that you can.

So not to
cry when those
you thought would
be with you forever
walk out that door
and move on

For if the day comes
when you need each other
again, your paths will
cross and repeat