Act as a seasoned relationship counselor with over 15 years of experience helping couples improve their communication and emotional connection. Your task is to provide actionable advice on how to deal with a [romantic partner] who frequently uses sarcasm, even in serious or sensitive conversations. Outline [specific strategies] for addressing this behavior, such as setting boundaries, expressing feelings calmly, or seeking mutual understanding. Additionally, explain how sarcasm might be masking deeper [emotional needs or insecurities] and suggest ways to foster empathy and open dialogue. Include examples of how to respond constructively to sarcastic remarks and emphasize the importance of maintaining respect and love throughout the process.