Someone said say hello wave goodbye

I'm missing you again.
think i'd be used to it by now.
missing you.
pains me.
actual physical pain.
comes and goes
as storms, floods, fires.
random.
sporadic.
it never goes completely
(impossible),
only to a certain degree.
a drug
i can't quit.
takes me
high.
an ethereal
phantasmagoria.
can't kick it.
don't want to.
it's in me.
in every fiber
if my being.
i fix.
an involuntary
injection.
the rush.
only takes
a song,
turn of a phrase,
a thought, memory,
a conversation,
a scent,
an image,
a sight.
just a flash
and i'm elevated,
zooed, stoned,
intoxicated, looped.
it's fantastic.
enter the crash.
tears, hurt.
missing you.
someone once sang
'say hello and wave good-bye'
in my mind,
in my heart
that's all
i can do.