本研究旨在探討同性婚姻合法化後，男同志社群在台北都會中選擇交友空間的決策行為及其互動模式。過去，男同志長期面臨制度與文化的邊緣化與污名，從愛滋病的標籤到同志家庭的歧視，社會普遍將其視為「異常他者」，使交友多局限於隱蔽或風險空間。自2019年同性婚姻合法化以來，台灣社會對多元性別的接納逐漸提高，台北都會作為同婚宣布地及平權運動重要據點，成為觀察男同志空間選擇變化的重要場域。本研究採用質性研究架構，並以詮釋取徑為方法論立場，強調從受訪者主觀經驗出發，不預設理論或價值判斷，透過深度訪談蒐集資料，理解男同志在交友空間選擇與互動行為中的脈絡與感受。研究從心理、社會、經濟與環境四面向切入，分析影響其決策的多元因素。
研究發現，男同志常使用五類交友空間，各空間有不同的決策邏輯與互動特性。「休憩空間」強調環境中的平等公共性與心理放鬆的感受；「性別友善餐飲空間」強調社會氣氛的包容與心理舒適的感受；「宗教場所」則以心靈平靜感受為主，其次是空間提供的社群歸屬；「娛樂空間」重視主題性的經濟活動與心理刺激感；「運動場所」則著重自我展現與曖昧的互動。研究結果同樣顯示，同婚後男同志在這些空間中的互動方式出現變化，非言語行為由壓抑如閃避眼神轉為穩定眼神接觸，言語也從隱晦轉為主動開啟話題，反映社會氛圍改變的影響。

This study aims to explore the decision-making behaviors and interaction patterns of gay men in choosing social spaces in the Taipei urban area after the legalization of same-sex marriage.Historically, gay men in Taiwan have faced systemic marginalization and stigmatization, ranging from the association with HIV/AIDS to the discrimination against same-sex families. Society has long regarded them as “deviant others,” limiting their social interactions to hidden or risky spaces. Since the legalization of same-sex marriage in 2019, public acceptance of gender diversity in Taiwan has gradually increased. As the place where same-sex marriage was announced and a long-standing hub for LGBTQ+ rights movements, the Taipei metropolitan area has become a key site for observing changes in spatial choices among gay men.This research adopts a qualitative framework with an interpretive approach as its methodological stance, emphasizing the understanding of participants’ subjective experiences without imposing predefined theories or value judgments. Through in-depth interviews, the study gathers first-hand narratives to explore the contextual meanings and feelings behind space selection and interaction behaviors among gay men. From psychological, social, economic, and environmental perspectives, it analyzes the multifaceted factors that influence these decisions.The findings identify five common types of social spaces used by gay men, each reflecting distinct decision-making logic and interaction characteristics. “Leisure spaces” emphasize environmental openness and psychological relaxation; “gender-friendly dining spaces” highlight inclusive social atmospheres and emotional comfort; “religious venues” provide spiritual peace and a sense of community; “entertainment spaces” focus on themed economic activities and emotional stimulation; and “sports venues” emphasize self-expression and ambiguous interactions. The study also reveals that after same-sex marriage legalization, interaction behaviors have shifted—nonverbal behaviors, once restrained (e.g., avoiding eye contact), have become more open (e.g., sustained eye contact), and verbal communication has moved from ambiguous to more direct and proactive expressions. These changes reflect a broader response to the evolving social climate.