[Verse 1]

Take me back, when it was just you and I

All night long, shooting stars, my guitar

Playing all of your favorite songs

Pretending we're okay

These words I wanna say

I see it on your face so I don't

[Pre-Chorus]

I know if I ask you won't

Tell me what I want to know

[Chorus]

Since you don't love me anymore

All that we could be, thrown on the floor

You're my serotonin

Tell me, where have you been?

My serotonin, my serotonin

[Verse 2]

Fell from Eden, I'm not sleeping

All you are is on my mind

Tore my heart, and now I'm scarred

I wanna go back in time, pretending we're okay

Those words I'll nevеr say

I saw it on your face, now I know

[Chorus]

Since you don't love mе anymore

All that we could be, thrown on the floor

You're my serotonin

Tell me, where have you been?

My serotonin, my serotonin

[Bridge]

I can't live without you, even if I tried to

I can't live without you, even if it tried

I can't live without you, even if I tried to

I can't live without my serotonin

[Chorus]

Since you don't love me anymore

All that we could be, thrown on the floor

You're my serotonin

Tell me, where have you been?

My serotonin, my serotonin

[Outro]

I'm not happy without you

I'm not happy without you

I'm not happy without you