on the rocks

(idiom) a relationship is facing much difficulty, is almost over

Example Sentences:

My marriage is on the rocks because my wife and I don’t get along anymore.

My best friend was really rude to me, and now our friendship is on the rocks.

Similar idioms:

1. on the rocks (2)
2. break down
3. let it slide
4. water under the bridge
5. once close to