交心

jiāoxīn
to open one's heart; to have a heart-to-heart conversation

CEDICT

to lay one's heart bare; to open one's heart to

Wiktionary

  1. 交集内心
  2. 彼此坦诚相处

重編國語辭典

毫无保留说出自己对方说出内心想法

維基詞典

Entry Composition