Well this is about assholes in general. It's based on the feeling of being taken for granted and not feeling important at all. Hope you'll like it :)

You're late again
I'm callin' you up
You're with your friends
Seems like you forgot

And just cuz you are you
You think an excuse
Can settle it fine
But baby I'm done

You say I'm the one
But I don't come first
Why not say goodbye
Since I'm nothin' worth

So...

REF:
What do you need me for?
You seem to have fun anyways
It's time to come clean boy
Seems like I'm just a phase
When your money's out
When homies ain't around
You use me to waste time
But babe I've had enough
What do you need me for?
Tell me boy

I'm changing my plans
Makin' time for you
You say you'll be there
And I'm such a fool

For thinkin' this could be real
For believing you feel as I feel
But you're just playin' with me

So...

REF:
What do you need me for?
You seem to have fun anyways
It's time to come clean boy
Seems like I'm just a phase
When your money's out
When homies ain't around
You use me to waste time
But babe I've had enough
What do you need me for?
Tell me boy

And babe when your life's empty
You'll be the real fool
Flashbacks of me leaving
Cuz that's what imma do
And I know soon I will see you with another girl
But I'll be smiling thinkin; thank god I'm not her

So...

REF:
What do you need me for?
You seem to have fun anyways
It's time to come clean boy
Seems like I'm just a phase
When your money's out
When homies ain't around
You use me to waste time
But babe I've had enough
What do you need me for?
Tell me boy