on the outs

(idiom) to no longer be on friendly terms

Example Sentences:

Marjory and her boyfriend are on the outs because her boyfriend was with another woman.

A: Do you still talk to your best friend, Amy?
B: No, we are on the outs.
A: Why?
B: She was really rude to me.

From the Blogs:

Kate Hudson Owen Wilson on the outs

Media:

Similar idioms:

1. cockblock