Social intimacy refers to high-quality interactions and close relationships with significant others, including spouses, friends, and family members (Miller & Lefcourt, 1982). In today's digitally connected environment, individuals are embedded in social media and online networks, which significantly influence intimate interactions, engagement, and information exchange (Zhang & Ling, 2015).

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Human-AI relationship,Brand social intimacy,Social companionship,Social network engagement,Thematic analysis