难舍难分

難捨難分
nánshěnánfēn
loath to part (idiom); emotionally close and unwilling to separate

CEDICT

情深意浓，捨不得分开。如：「小俩口儿浓情蜜意，已经到了难捨难分的地步。」也作「难解难分」。

重編國語辭典

难分难捨／难分难舍(nánfēnnánshě)之同义词

維基詞典

Entry Composition

1 难舍 nánshě to be difficult to give up; to be something one is loath to part with
2 难 nán
  1. difficult (to...)
  2. problem
  3. difficulty
  4. difficult
  5. not good
3 分 fēn
  1. to divide; to separate
  2. to distribute; to allocate
  3. to distinguish (good and bad)
  4. (bound form) branch of (an organization); sub- (as in 分局 fēnjú)
  5. fraction
  6. one tenth (of certain units)
  7. unit of length equivalent to 0.33 cm
  8. minute (unit of time)
  9. minute (angular measurement unit)
  10. a point (in sports or games)
  11. 0.01 yuan (unit of money)

Related entries

难分难舍 nánfēnnánshě loath to part (idiom); emotionally close and unwilling to separate
难舍难离 nánshěnánlí loath to part (idiom); emotionally close and unwilling to separate