Dealing with manipulative responses to gratitude requires assertiveness and boundary-setting: 1. Recognize the manipulation for what it is. 2. Express your feelings about their responses calmly and clearly. 3. Set boundaries about acceptable communication. 4. Don't engage in guilt trips or emotional manipulation. 5. Maintain your right to express gratitude without strings attached. 6. Seek to understand the root of their behavior. 7. Encourage open, honest communication about needs and feelings. 8. Consider couples therapy if the issue persists. 9. Practice self-care and maintain your emotional well-being. 10. Assess whether this behavior is part of a larger pattern of emotional abuse.