Lyrically speaking, of course....

You change your mind like a girl changes clothes
Yeah, you PMS like a bitch -- I would know
And you always think, always speak cryptically
I should know that you're no good for me

'Cause you're hot and you're cold
You're yes and you're no
You're in and you're out
You're up and you're down

You're wrong when it's right
You're black and it's white
We fight, we break up
We kiss, we make up

You, you don't really wanna stay, no
But you, you don't really wanna go, oh

'Cause you're hot and you're cold ...