~合う (reciprocal/mutual action)

So we needed to help each other, and in that sense the bond with my sister was strong.

A fighting dog is hard to call back.

We sat down and talked through the whole thing until we reached agreement.

Under this system, students must take turns teaching each other and helping one another.

China and Japan haven't truly reached the point of knowing each other.

The two countries are at odds with each other.

In their after-dinner conversation, they discussed politics.

Friends must help each other.

Stand facing each other.

It's been arranged that I'll discuss the matter with him tomorrow.

After discussing it with my father, I decided to change jobs.

Married couples should help each other throughout their lives.

She shared the cake with me.

There are many things we need to discuss.

Let's keep in touch.

Oil doesn't dissolve in water.

Oil and water don't blend together.

It is perfectly natural for a husband and wife to love each other.