[Verse 1]
You broke my heart like I expected
You dumb me down and drink me diluted
I bet you thought I was expensive
Sacrificed myself and now you're haunting me

[Chorus]
I must've been a lunatic
I must've been a lunatic
I must've been a lunatic
I must've been a lunatic
I must've been a lunatic
I must've been a lunatic

[Verse 2]
You said you loved me and never meant it
Everything you say is so calculated
I bet you thought I wasn't stupid
You satisfied your ego and now it's haunting me

[Chorus]
I must've been a lunatic
I must've been a lunatic
I must've been a lunatic
I must've been a lunatic
I must've been a lunatic
I must've been a lunatic

[Bridge]
Yeah, yeah, yeah, yeah, yeah, yeah
Yeah, yeah, yeah, yeah, yeah, yeah
Yeah, yeah, yeah, yeah, yeah, yeah
Yeah, yeah, yeah, yeah, yeah
Yeah, yeah, yeah, yeah, yeah, yeah
Yeah, yeah, yeah, yeah, yeah, yeah
Yeah, yeah, yeah, yeah, yeah, yeah
Yeah, yeah, yeah, yeah, yeah

[Chorus]
I must've been a lunatic
I must've been a lunatic
I must've been a lunatic
I must've been a lunatic
I must've been a lunatic
I must've been a lunatic

I must've been a lunatic
I must've been a lunatic
I must've been a lunatic
I must've been a lunatic
I must've been a lunatic
I must've been a lunatic