The opposite of "co-habits" could be "separate residences," indicating two individuals living apart from each other. Other antonyms might include "incompatible," suggesting that two people cannot coexist in the same space, or "opposing lifestyles," emphasizing a fundamental difference in habits and preferences. "Divided living" or "distinct spaces" might also convey the idea of two people living independently, without sharing accommodations. In any case, the antonyms for "co-habits" suggest a lack of shared space, time, or values, emphasizing the importance of individuality and independence rather than co-dependence.