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we are of equal status in this regard; we are in the same boat
the same to you; the feeling is mutual
困った時はお互い様だよね。
When in trouble, we help each other, right?
困った時はお互い様だよ。
We help each other in tough times.
いいえ、お互い様ですよ。
No, we're both in the same boat.