What is why is he avoiding eye contact all of a sudden?

There could be several reasons why someone might suddenly start avoiding eye contact. It's important to remember that interpretations can vary widely based on context, individual differences, and cultural norms. Here are some possible reasons:

1. Social Anxiety or Shyness: The person might feel nervous or self-conscious, which can lead to difficulty maintaining eye contact.

2. Discomfort or Guilt: They might be feeling guilty or uncomfortable about something related to you or the situation.

3. Loss of Interest or Engagement: Avoiding eye contact can sometimes indicate that someone is no longer interested in the conversation or interaction.

4. Cultural Reasons: In some cultures, direct eye contact can be considered disrespectful or confrontational.

5. Stress or Distraction: They might be stressed or preoccupied with their own thoughts, making it hard for them to focus on the present interaction.

6. Personal Conflict or Issues: The person might be dealing with personal issues or conflicts that make it hard for them to engage fully.

7. Medical or Psychological Conditions: Certain conditions, like autism spectrum disorder or depression, can affect a person’s ability to maintain eye contact.

If this change in behavior concerns you, it might be helpful to have an open and honest conversation with the person to understand what might be happening.