This study examines which communication styles enhance happiness in social relationships among 454 students aged 18-24 from eight universities in Turkey. Data were collected through online and face-to-face surveys. Communication behaviors were categorized as expressiveness, emotionality, and manipulativeness using the Communication Styles Inventory (CSI). The Social Well-Being Scale, based on the PERMA model of positive psychology, was used to measure the quality of social relationships and life satisfaction. Correlation and regression analyses indicated that an expressive communication style is positively associated with higher social well-being, while emotional and manipulative communication styles do not significantly affect social well-being. The results highlight that promoting expressive communication behaviors can increase happiness and satisfaction in social interactions among young individuals.