Give me the one thing you can't give

I am a witness to your demise
My vision has always been blind
The largest secret is the one you can't keep
Walking around, while your sound asleep
Can't you see, I'm trying to leave
My love for you, needs a reprieve
Reject, my body is screaming
My heart and my soul are bleeding
Was able to see through your lies
One more chance but no more tries

Give me the one thing you can't give