[Verse 1]
It started out great at seven or eight
Then we talked all night, so late
Then you got in my head, can't believe what you said
It's so crazy, it's so true

[Pre-Chorus]
You said, "You can't believe yourself
If no one else was there
And how can you know what's true
If nobody else cares?" Hmm

[Chorus]
Like how do you know
When a feeling changes?
How do you know it
When the feeling is gone?
How do you know so true
The things that you do?
How do you know me
Know me at all?

[Post-Chorus]
Like how do you know me?
Da-da-da-da-da-da
[Verse 2]
When it got to be four, you opened the door
Just to hear that music a little bit more
For the very first time, you opened my eyes
It's so strange, it's so right

[Pre-Chorus]
You said, "Don't cry, the water's fine
As long as you can swim
But you can't know what it's like
If you never jump in"

[Chorus]
How do you know
When a feeling changes?
How do you know it
When that feeling is gone?
How do you know so true
The things that you do?
How do you know me
Know me at all? Ah

[Post-Chorus]
How do you know it?

[Bridge]
And all this time keeps ticking around me
I feel like I could tell you something again, but then
How do you know
When a feeling changes?
How do you know it
When the feeling is gone?
How do you know so true
The things that you do?
Like how do you know me
Know me at all?
[Chorus]
And how do you know
When a feeling changes?
How do you know it
When that feeling is gone?
And how do you know so true
The things that you do?
Like how do you know me
Know me at all? Ah