2 sentences

1. 他们从好朋友变成了恋人。

   tā​men cóng hǎo péng​you biàn​chéng le liàn​rén.

   They went from being good friends to becoming lovers.

   Source: Dong Chinese Dictionary

2. 我们不是恋人。

   wǒ​men bù shì liàn​rén.

   We're not lovers.

   Source: OpenSubtitles