Katy Perry - My Boyfriend’s Ex-Girlfriend lyrics

One day I was sitting in class
Got a note saying watch your back
Someone told me who it was from
She wasn't happy because she just got dumped
It was over but not in her mind
It's not my fault he left her behind
I always knew they had a history
I didn't know it included me

She wasn't ready to let him go
Now I'm dealing with a psycho

My boyfriend's ex girlfriend
I think she's going off the deep end
She loves him, she hates me
They broke up now she wants to blame me
Na na na na na na na na na na na na

Went to a party on a Saturday night
I wasn't planning to get in a fight
All I wantеd was to have some fun
You know I'd nevеr wanna hurt no one
She walked over thinking she was so tough
She stared me down but she had to look up
Then she started to lose control
What can I say that's rock and roll

I wasn't sure but now I know
That I'm dealing with a psycho

My boyfriend's ex girlfriend
I think she's going off the deep end
She loves him she hates me
They broke up now she wants to blame me

Wake up girl 'Cause it's over
It's time to get a life
Go cry on your own shoulder
Can't you see that he's mine

My boyfriend's ex girlfriend
I think she's going off the deep end
She loves him she hates me
They broke up now she wants to blame me

My boyfriend's ex girlfriend
My boyfriend's ex girlfriend na na na na na
Na na na na na na na na na na na na
Na na na na na na na na an na na na
My boyfriend's ex girlfriend
Na na na na na na na na na na na na
My boyfriend's ex girlfriend
Na na na na na na na