It's all about how she broke up with a self absorbed jerk, "I realize you love yourself more than you could ever love me" She doesnt care if he tells all his friends lies about her because she's telling hers that he's gay and that's why she dumped him. "So go and tell your friends that I'm obsessive and crazy That's fine; I'll tell mine that you're gay" Then she's going to date all of his friends and prove him wrong to his friends for revenge anyway. "There's no time for tears, I'm just sitting here
planning my revenge There's nothing stopping me
From going out with all of your best friends" It doesnt really matter to her anyway though, because he's "just another picture to burn" She states twice that there is no way that he can get her back. "And if you come around saying sorry to me My daddy's gonna show you how sorry you'll be" "If you're missing me, You'd better keep it to yourself Cause coming back around here Would be bad for your health..." And she mentions a few things she hates about him. "I hate that stupid old pickup truck You never let me drive You're a redneck heartbreak Who's really bad at lying" Basically a good, old fasioned, "You suck, so suck it!" break-up song.