No love lost
If there is "no love lost" between two people, they have a strong hatred, hostility, or enmity for the other person, and make no attempt to conceal it.
Son, I'm aware that there's no love lost between you and your cousin Bob, but we'll be staying at my brother's lake house all week, so you'd better not ruin our family vacation by fighting!
No love lost by Eldorean May 28, 2009
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