His best days will be some of my worst

What am I supposed to do when the best part of me was always you
What am I supposed to say when I'm all choked up and you're ok
I'm falling to pieces

They say bad things happen for a reason
But no wise words gonna stop the bleeding
'Coz he's moved on while I'm still grieving
And when a heart breaks 
no it don't break even, even no.