bad blood

Tension, disdain, or enmity between two or more people due to past disagreements or transgressions. There's bad blood between Elise and Piper, so don't leave them alone together. I certainly wish I didn't have to work with that imbecile, but no amount of bad blood will prevent me from acting like a professional. Look, I apologize for what I said, OK? I don't want there to be any bad blood between us after I'm gone.

there is bad blood (between people)

There is deep-seated tension and disdain between two or more people due to past disagreement or transgressions. There's bad blood between Elise and Piper, so try not to leave them alone together. There has been some bad blood between these two teams ever since last year's brutal playoff series.

there is bad blood between —

there is long-standing hostility between the parties mentioned.

2001 Hugh Collins No Smoke There are occasional square-gos sometimes, but there's no bad blood between rival gangs.