Interpersonal conflicts are common in romantic relationships. How to respond and cope with conflicts impacts the romantic relationship process and outcomes. This study examined the heterogeneity of Chinese youth's cognitive emotion regulation (CER) strategies and conflict resolution responses, as well as their collective influence on individuals' perceived partner responsiveness (PPR) and relationship satisfaction. We recruited 300 Chinese youth who were currently involved in romantic relationships to complete self-reported measures of CER (reappraisal and suppression), conflict resolution responses in romantic relationships (exit, voice, neglect, and loyalty), PPR, and relationship satisfaction. We used latent profile analysis (LPA) to classify the combined effects of CER and conflict resolution responses, identifying four profiles: releasing, gentle, proactive, and inhibiting. Proactive communicators have significantly higher levels of relationship satisfaction compared to the other three groups and significantly higher levels of PPR compared to individuals in releasing and inhibiting profiles. Individuals in releasing and gentle profiles have significantly higher relationship satisfaction and PPR than individuals in the inhibiting profile. This study uncovered the possible associations between Chinese young adults' emotion regulation and conflict response profiles and romantic relationship process and outcome by adopting the person-centered approach. We further discussed the practical implications of the findings.