Well, This one could be the girl breaking up with the guy or vise-versa. It's called 'I Don't Love You' By My Chemical Romance. If you type in what kind or genre of music you want your break-up song to be, I can try to help again later.
Oh yeah, alot of the HIM songs could help out. Love said no is my favorite.
The best breakup song I think I have heard to date... Is by Coheed and Cambria.
It's called Wake up.
I adore this lyric and the music aint too bad either.
Wake Up. Coheed and Cambria
(Snakes on a plane soundtrack)
I'm going to ride this plane out of your life again.
I wish that I could've stayed but you argued.
More than this I wish you could've seen my face
In the backseat staring out the window.
I'll do anything for you,
Kill anyone for you.
So leave yourself intact
'Cause I will be coming back.
In a phrase to cut these lips,
I love you.
The morning will come
In the press of every kiss
With your head upon my chest
Where I will annoy you
With every waking breath
Until you decide to wake up.
I earned through hope and faith
The curves around your face
That I'm the one you'll hold forever.
If morning never comes for either one of us,
Then this I pray to you wherever.
I'll do anything for you.
This story is for you.
('Cause I'd do anything you want me to... for you.)
I'll do anything for you,
Kill anyone for you.
So leave yourself intact
'Cause I won't be coming back.
In a phrase to cut these lips,
I loved you.
The morning will come
In the press of every kiss
With your head upon my chest
Where I will annoy you
With every waking breath
Until you decide to wake up.
The morning will come
In the press of every kiss
With your head upon my chest
Where I will annoy you
With every waking breath
'Til you decide to wake up.
so so many break up songs these days but I would say the one of Eamon and his ex-girlfriend Frankee its harsh but between those two songs yeah its the best heres the link: