Which term is used to describe the state of being with another person but free from the presence of others?

The term that accurately describes the state of being with another person but free from the presence of others is intimacy. Intimacy refers to a close, familiar, and usually affectionate or loving personal relationship with another individual. It encompasses emotional closeness and the sharing of thoughts, feelings, and experiences in a manner that distinguishes a relationship from one that is simply social or casual.

In contrast, solitude refers to a state of being alone or isolated, which does not align with being with another person. Defensible space relates to a concept in architecture and urban design that involves the physical environment's ability to discourage crime by promoting a sense of ownership and control among residents. Personalization refers to the modifications or adaptations made to a space, typically to reflect individual tastes and preferences, rather than the relational aspect implied by the question.