冤家路窄

yuānjiālùzhǎi
  1. lit. for enemies, the road is narrow (idiom)
  2. fig. rivals inevitably cross paths

CEDICT

much as one wants to, one cannot avoid one's enemy

Wiktionary

仇人或不愿见到的人，偏偏越容易相遇，躲避不开。《初刻拍桉惊奇．卷三○》：「真是冤家路窄，今日一命讨了一命。」《孽海花．第二二回》：「却不防冤家路窄，倒被阳伯偷看了去。」也作「冤家路狭」。

重編國語辭典

Entry Composition

1 冤家 yuānjia
  1. enemy
  2. foe
  3. (in opera) sweetheart or destined love
2 路 lù
  1. journey
  2. route
  3. line (bus etc)
  4. sort; kind

classifier: 條
3 窄 zhǎi
  1. narrow
  2. narrow-minded
  3. badly off