There are few eight-character idioms of intimate friends.

I just remembered a few for the time being. Let me write it down for your reference-

1, I will visit my only soul friend in the vast sea of people, and I am lucky to get it; No, my life. ...

-Xu Zhimo

2. It is enough to have a bosom friend in life.

-Lu Xun

3, the wine meets a thousand cups of friends, and the words are not speculative.