相爱相杀

相愛相殺
xiāngàixiāngshā
to have a love-hate relationship with each other

CEDICT

Entry Composition

1 相爱 xiāngài to love each other
2 相 xiāng
  1. each other
  2. one another
  3. mutually
  4. fret on the neck of a pipa 琵琶 pípa (a fret on the soundboard is called a 品 pǐn)
3 杀 shā
  1. to kill; to slay; to murder; to attack
  2. to weaken; to reduce
  3. (dialect) to smart
  4. (used after a verb) extremely