《How Does She Know》的詞曲由葛萊美獎得主、爵士樂歌手埃塔·詹姆士為其量身打造，由格溫·史蒂芬妮演唱。
歌詞如下：
Verse 1:
I'm standing here with a heavy heart
Trying to figure out what to do
I don't know what to say
And I don't know what to do
Chorus:
How does she know?
She doesn't even know me
How does she know?
When she's talking to me
How does she know?
How does she know?
Verse 2:
She's asking me questions I can't answer
Trying to figure out what I'm feeling
I don't know what to say
And I don't know what to do
Chorus:
How does she know?
She doesn't even know me
How does she know?
When she's talking to me
How does she know?
How does she know?
Bridge:
I don't want to hurt her feelings anymore
But I don't know how to tell her now
I don't know what to do
And I don't know what to say
Chorus:
How does she know?
She doesn't even know me
How does she know?
When she's talking to me
How does she know?
Oh, how does she know?
Outro:
How does she know? How does she know?
How does she know? Oh, how does she know?