3 sentences

1. 我讨厌办公室恋情。

   wǒ tǎo​yàn bàn​gōng​shì liàn​qíng.

   I hate office romances.

   Source: OpenSubtitles

2. 他们的恋情在大学时代就开始了。

   tā​men de liàn​qíng zài dà​xué shí​dài jiù kāi​shǐ le.

   Their romance began back in their college days.

   Source: Dong Chinese Dictionary

3. 提到那段失败的恋情，他露出了苦涩的微笑。

   tí​dào nà duàn shī​bài de liàn​qíng, tā lù​chū le kǔ​sè de wēi​xiào.

   Mentioning that failed relationship, he gave a bitter smile.

   Source: Dong Chinese Dictionary