cohabit|cohabiting

他们决定合租公寓，这样可以分摊房租。

They decided to ___cohabit in an apartment to split the rent.

这对情侣决定同居但暂时不结婚。

This couple decided to start ___cohabiting without getting married for now.

他们决定婚前先同居一段时间。

They decided to ___cohabit for a while before getting married.