1) The argument they had yesterday is water under the bridge now.

2) Let's move on from our past mistakes, it's all water under the bridge.

3) We used to have disagreements, but that's all water under the bridge.

4) Apologizing for the misunderstanding, she assured him it was water under the bridge.

5) After forgiving each other, they agreed that everything was water under the bridge.

6) They had a falling out, but they both decided it was best to let it be water under the bridge.

7) The conflicts from the past are now just water under the bridge.

8) Revisiting old arguments will not resolve anything, just let it be water under the bridge.

9) He chose to let the past be water under the bridge and focus on the present.

10) The betrayal she felt is still there, but she knows it's time to consider it water under the bridge.