It's a very lucky thing to have a confidant in one's life.

人这一辈子，能够得到一个知己是件很幸运的事情了。

He mistakenly regarded the enemy as his confidant.

他错把敌人当做心腹。

She hoped to start a family with him, but he only regarded her as a confidant.

她一心希望能和他组建家庭，然而他只把她当做密友。

You need to talk this over with a confidant.

你需要和一位知己讨论这个

He was their adviser, confidant and confessor.

他是他们的顾问、知己和倾诉对象。

Share your anxieties with a confidant.

向你的密友倾诉你的焦虑。

I have a good confidant.

我有一个好知己。

You are my best friend and confidant.

你是我最好的朋友和知己。

He became my friend, confidant, and advisor.

他成了我的朋友、我的知己、我的顾问。