The primary objective of this inquiry is to empirically evaluate the impact of relational marketing practices and associated benefits on cooperation through trust among the consumer base of Micro, Small, and Medium Enterprises (MSMEs) operating within Bandung Village. The study is motivated by the importance of building long-term relationships and customer trust to foster sustainable cooperation for MSMEs. Methodologically, a quantitative design was implemented, utilizing Partial Least Squares Structural Equation Modeling (PLS-SEM) to perform statistical assessments on a dataset gathered from 79 targeted respondents. The results indicate that relationalship marketing exerts a favorable and statistically meaningful impact on consumer trust, relationship benefits have a noticeably positive and significant contribution toward trust, which subsequently yields a robust, positive drive to foster collaborative behavior. Furthermore, trust is proven to mediate the effect of relationship marketing on cooperation as well as the effect of relationship benefits on cooperation. The findings theoretically support Relationship Marketing Theory, which emphasizes that trust is a crucial factor in establishing long-term relationships and enhancing customer cooperation within MSMEs. Practically, MSME owners are encouraged to strengthen customer relationships through effective communication, improved service quality, and the provision of greater relational benefits to enhance customer trust and cooperation. Prospective investigative endeavors are encouraged to incorporate additional variables, such as customer loyalty, customer satisfaction, and digital marketing, as well as to expand the research scope to other MSME sectors.