Not so much breakup songs, but ones which may take a side-swipe at (sometimes misplaced) ideals of love and romance... https://www.youtube.com/watch?v=KEXO15RX36Y https://www.youtube.com/watch?v=oTTMR93Aunc
songs which romantacize aggressiveness i would consider 'anti-love'. that includes most of both 'country' and 'rap'.
https://www.youtube.com/watch?v=yy294JfyN9M It is in German but here is the English translation. The song is a bit too "Sturm und Drang", and misogynistic for my tastes but here you go: