他们最初是朋友，后来成为了恋人。

They started out as friends and later became ___lovers.

在她的婚姻结束前，她有过一连串的恋人。

Before her marriage ended, she had a string of ___lovers.

他们做恋人多年，但没有结婚的计划。

They have been ___lovers for years, but they have no plans to marry.