What is is he shy or not interested?

As an AI language model, I cannot provide a direct answer for this question. However, here are some signs that can help determine if someone is shy or not interested:

Shy:

1. Avoiding eye contact
2. Staying quiet and reserved in social situations
3. Fidgeting or nervousness when around others
4. Difficulty initiating conversations
5. An inclination to avoid attention or the spotlight

Not interested:

1. Lack of engagement in conversations
2. Short and abrupt responses to questions
3. Disinterest in spending time together
4. A lack of effort to initiate conversations or hangouts
5. Canceling plans or being consistently busy

It's important to note that every individual is different, and some may exhibit a combination of both traits. Additionally, the best way to know if someone is shy or not interested is through honest communication and asking them directly.