How could this happen to you?

I know you have a heart
Or you wouldn't have
Cared as much as you do
But the doctors told you
It wasn't good
So now what am I supposed
To do?
How am I supposed
To act?
What are you supposed
To do?
Sit around and wait
Till the day comes
That stops your pain?
When that day comes
Your pain will be gone
But guess what?
Mine will just be starting
So don't give up don't let go.
I will be to weak without you.
I wont be able to hold on
So please don't leave
I love you.
You are my Best Friend