What I've Kept Inside

I don't know why its hard for me
I'm not sure why I cry
I have no clue why it still hurts
To know we said goodbye

I wish I could explain it
But you'd never understand
The tears that burn in my eyes
When I see you hold her hand...

But you'll never really know
The pain that I go through
For I just fake a smile and say
That I'm so glad for you...

Yet I'll spend another day
With pain that never ends
Wishing we could go back...
To before I said "just friends"