cohabiting

/K OW0 HH AE1 B IH0 T IH0 NG/
verb
  1. 1

    To live together with someone else, especially in a romantic and sexual relationship but without being married.

  2. 2

    To coexist in common environs with.

  3. 3

    To engage in sexual intercourse; see coition.

Source: https://en.wiktionary.org/wiki/cohabit, https://en.wiktionary.org/wiki/cohabiting