cohabit

verb

1. (intransitive)To live together with someone else, especially in a romantic and sexual relationship but without being married.
2. (intransitive)To coexist in common environs with.
3. (archaic, intransitive)To have sex; see coition.
4. To cooperate with an opposing political party.

   “An outright far-right victory in the two-round poll, which commences on 30 June, could render Macron a lame duck, doomed to “cohabit” with an overtly xenophobic, Islamophobic, authoritarian and illiberal government led, prospectively, by Jordan Bardella, Le Pen’s young protege”