Then now how?

I loved you then
I love you now
By the way you act
I wonder how
I know your hers
and your heart is gone
I’m sure your mind’s taken
and you've moved on
It started with a smile,
a meeting by chance
But now I'm not worthy
of a backward glance
Do you even know
how I feel inside?
Nothing is great enough
to hold the tears I've cried