Can't find the words-time-emotion

I'm sorry I've been gone so long—
I've been so busy, you know time flies.
With work and outside interests
I haven't had any time to rest.
But today as my fingers mechanically typed
I noticed the reflection of the pink, yellow,
orange-streaked sky
in the corner of the computer screen
And saw my forlorn, furrowed brow
And deep-in-thinking, creasing frown
And suddenly remembered how
we used to talk
on the phone,
at night,
a seemingly old form of communication (nowadays),
yet the chatter of two close friends
seemed to light up the room
and warm my heart
every time without fail.
Now, we seldom call except 
to ask a question about homework.

I see you at school every day,
bursting with everything I want to say—
how was your weekend,
here's the story of mine,
did I tell you yet about that time...?
But class starts
and ends
and we scurry to our next class,
faces lighting up as we pass each other
in the hallway
briefly
once or twice
throughout the day.

I'm sorry I've been gone so long—
really, I have no excuse.
at midnight, when my homework's done,
sometimes I look through my old photobook
and I'm always reminded
of you.
How we talked and played
since we met in 3rd grade
how we always 
made each other's day
a little better
with a smile
or a simple "hello"

We never seem to have enough time now though

I'm sorry I've been gone so long.
I promise tomorrow I'll run up
and give you a hug, or at least a great big smile,
in those five minutes between classes,
even if it makes no sense to anyone—
but it doesn't matter.
I don't care.
because I know you'll understand,
and that's enough for me,
as long as you know
I'll always be there.