Why do we value only when we lose

Why do we value only when we lose?
Why does my heart was always closed?
I could have given you more love and attention
But I did not think he had a connection

Most now know that I do not let it flow
And why only now do I know?

You were always my best friend, loved me as I am
But I did not care and just wanted the other, but now I see
I should have loved you more, I appreciate more
and always blame me for not having done it before
You always loved me no matter I did not realize
And now I'm alone tonight

Why did it have to be?
Why I did not get to see?
good things go by so fast
then only part of the past

hope you'll forgive me someday
and I know you're right, some way
you'll always be in the middle of my heart
you will always be

You were always my best friend, I care and love me
But I did not care and just wanted the other, but now I see
I should have loved you more, I appreciate more
and always blame me for not having done it before
You always loved me no matter I did not realize
And now I'm alone tonight

I need you, I miss you