若即若離 [－－－离]

Jyutping joek6 zik1 joek6 lei4
Pinyin ruò jí ruò lí

Definitions (CC-CEDICT)
  1. lit. seeming neither close nor distant (idiom)
  2. fig. to keep one's distance
  3. (of a relationship) lukewarm
  4. vague
Definitions (粵典–words.hk)
  1. 語句
    態度​一時​親近​，​一時​疏遠
    the relation between two people is sometimes close and sometimes not so; to be neither close nor distant
Definitions (Wiktionary)
  1. phrase, idiomatic
    to be neither friendly nor aloof; to maintain a lukewarm relationship
  2. phrase, idiomatic
    to be unclear; to be vague