请问这首英文歌是谁的

When You're Gone

Avril Lavigne

I always needed time on my own
I never thought
I’d need you there when I cried
And the days feel like years
when I’m alone
And the bed where you lie
Is made up on your side

When you walk away
I count the steps that you take
Do you see how much I need you right now?

When you’re gone
The pieces of my heart
are missing you
When you’re gone
The face I came to know
is missing too
When you’re gone
The words I need to hear
to always get me through the day
And make it ok
I miss you

I never felt this way before
Everything that I do
reminds me of you
And the clothes you left
are lyin’ on the floor
And they smell just like you
I love the things that you do

When you walk away
I count the steps that you take
Do you see how much I need you right now?

Whe