长相厮守

長相廝守
chángxiāngsīshǒu
(of a couple) to stay together for life

CEDICT

  1. (of a couple) to stay together for long
  2. to stay together for long

Wiktionary

情爱历久弥坚的永远相守在一起。

重編國語辭典

Entry Composition

=1 长相 zhǎngxiàng
  1. appearance
  2. looks
  3. profile
  4. countenance
=1 长相 chángxiāng
  1. (used in some phrases) at/to/with/… each other for long
  2. at/to/with/… each other for long
2 厮守 sīshǒu to stay together; to rely on one another