半糖夫妻 [－－－－]

Jyutping bun3 tong4 fu1 cai1
Pinyin bàn táng fū qī

Definitions (CC-CEDICT)
  1. weekend spouse
  2. relationship involving a sugar-daddy
Definitions (Wiktionary)
  1. noun, neologism, slang
    (upper-middle-class) couple who live apart during the work week and only spend weekends together, often as an attempt to keep the romance alive