If your partner doesn’t want to be intimate often, it’s…

1. Communication: There might be underlying issues or concerns that need to be discussed openly.
    
2. Emotional Connection: They could be feeling disconnected emotionally, which can affect physical intimacy.
3. Stress or Fatigue: Life stressors or exhaustion can play a significant role in intimacy levels.
    
4. Different Needs: Everyone has different levels of sexual desire; it’s essential to understand and respect each other’s needs.
5. Health Issues: Physical or mental health issues could be affecting their desire for intimacy.
6. Relationship Dynamics: Changes in the relationship or external factors may also influence their willingness.

Understanding the reasons behind this can help you both find a way to improve your relationship. Communication and empathy are key.