Oh my God, you're so, so pretty
I see everything that he saw when he first saw you
And I don't want to admit it
In some alternate universe, we might be kinda close
It don't throw me off, seein' you out, seein' you around
Mostly, I don't think about it

It's only weird when you call him
It's only weird because we're not friends
Are you hoping he'll catch feelings for you again?
So I'm starting to think now I'll have to pretend
That you never even happened, oh, no, I don't think I can
No, I don't want you to see that I forget who I am
Yeah, I know I wouldn't want me to be my ex-boyfriend's new girlfriend

Girlfriend, uh
Girlfriend
So, sorry, I'm your ex's girlfriend (girlfriend, girlfriend)

And I'm catchin' myself thinkin' about all of the ways that I could lose him
And I can't help being a mess, 'cause he's the one that's gotta choose it
He's showin' up, always puts me first
Not to fuck you up, but we're so in love

You make it weird when you call him
And you make it weird because we're not friends
Are you hoping he'll catch feelings for you again?
So I'm starting to think now I'll have to pretend
That you never even happened, oh, no, I don't think I can
Oh no, I don't want you to see that I forget who I am
Oh no, I wouldn't want me to be my ex-boyfriend's new girlfriend

Girlfriend, uh
Girlfriend
So, sorry, I'm your ex's girlfriend
Oh, oh, uh (uh), uh (uh)
Oh, oh-oh, uh

I wanna know exactly what the two of you had
And I take it back (take it back)
Yeah, I take it back
I wanna know if he still thinks of you like that
Then I take it back
Yeah, I take it back

'Cause it's only weird when you call him
Yeah, it's only weird when you call him
So, sorry, I'm your ex's girlfriend