I've shown you I own you. And though you made me, you can't change me. I'm the perfect stranger who knows you too well

But I'm alive, I'm alive I am so alive
And I'll tell you the truth if you let me try.
You're alive, I'm alive, and I'll show you why
I'm alive, so live
I'm alive
I'm right behind you.
You say forget but I'll remind you.
You can try to hide but you know that I will find you.
'Cause if you won't grieve me, you won't leave me behind.