Well, I’d say check out some of the classic country songs - for every ‘sob your eyes out drunk at the bar’ tune there’s also a ‘you left and you suck and this is why’ song, usually either clever or cynical as all hell.
Here’s a list of titles (from dribbleglass.com) - google for the artists.
All I Want From You Is Away
I’m So Miserable Without You, It’s Almost Like Having You Here
Are You Drinkin’ With Me, Jesus?
Billy Broke My Heart at Walgreens and I Cried All the Way to Sears
How Can I Miss You if You Won’t Go Away?
I’m Under the Table Over You
Drop Kick Me Jesus Through the Goal Posts of Life
Welcome to Dumpsville, Population Me
If Love Were Oil, I’d Be a Quart Low
I Bought the Shoes That Just Walked Out on Me
She’s Acting Single, I’m Drinking Doubles
Is It Cold In Here, or Is It Just You?
We Used to Kiss on the Lips, But It’s All Over Now
My Head Hurts, My Feet Stink, and I Don’t Love Jesus
Thank God and Greyhound She’s Gone
I Changed Her Oil, She Changed My Life
How Come Your Dog Don’t Bite Nobody But Me?
You Ain’t Much Fun Since I Quit Drinkin’
I Don’t Know Whether to Kill Myself or Go Bowling
You’re the Reason Our Kids Are So Ugly
If You’re Gonna Do Me Wrong, Do It Right
I Fell for Her, She Fell for Him, and He Fell for Me
You Were Only a Splinter as I Slid Down the Banister of Life
She Got the Gold Mine and I Got the Shaft
My Wife Ran Off With My Best Friend, and I Sure Do Miss Him
Velcro Arms, Teflon Heart
If You Want to Keep the Beer Real Cold, Put it Next to My Ex-Wife’s Heart
If Whiskey Were a Woman, I’d Be Married for Sure
If You Can’t Live Without Me, Why Aren’t You Dead?
I Still Miss You Baby, But My Aim is Getting Better
If You Don’t Leave Me, I’ll Find Someone Who Will