How long has it been?

How long has it been
since we were first best friends?
We talked of how things
would stay the same.
I can't figure out why
that seems so difficult,
because would you know
you're all I think about?
Every little detail brings
my thoughts back to you.
Could these feelings be
what I've been lacking all along?
Would it really hurt so much
if you're what could fill
this gap between my heart?
I may happen to be blind
to what we could be,
but what I need is just a chance
to prove, to not only you, but to myself
that the only explanation for
this smile that spreads across my face
and the little leap in my heart
every time my thoughts are on you
is that I love you.