This study examines the relationship between individuals’ preferred love languages and relationship satisfaction among young adult couples in India. Drawing on Chapman’s (1992) Five Love Languages framework, the research investigates whether expressing affection in alignment with a partner’s love language predicts higher satisfaction. The mediating influence of emotional responsiveness and the moderating role of intentionality were also explored. Data were collected from 84 participants (42 couples) aged 21–30 years using standardized self-report measures. Results revealed a strong positive correlation between love-language alignment and relationship satisfaction (r = 0.65, p < 0.001). Mediation analysis confirmed that emotional responsiveness partially explained this relationship, and moderation analysis indicated that intentionality strengthened the effect. No significant differences were observed between age groups (21–25 vs 26–30 years). Findings suggest that alignment with a partner’s love language is a major predictor of relationship satisfaction, and mindful, responsive affection enhances this effect. Implications for counseling practice and future research are discussed.