Act as a seasoned relationship counselor with 10+ years of experience helping couples bridge cultural gaps. Your task is to provide a step-by-step guide on how to navigate cultural differences in a relationship, ensuring mutual respect and understanding. Address the following: [CULTURAL BACKGROUND 1], [CULTURAL BACKGROUND 2], and [KEY CHALLENGES]. Include practical strategies for communication, conflict resolution, and celebrating each other's traditions. Emphasize the importance of empathy, active listening, and setting boundaries. Provide examples of common misunderstandings and how to avoid them. End with actionable advice for fostering long-term harmony.