What is he hasn t asked for his key back?

As an AI language model, I do not have access to any specific context or information about who this person is and what key is being referred to. However, in general, if someone has not asked for their key back, it could be due to various reasons such as:

1. They may trust the person who has the key and feel that they can hold onto it for an extended period.
2. They may have forgotten about the key or feel that it is not essential to retrieve it immediately.
3. The key may be for a property or item that is not frequently used, so there is no urgency to retrieve it right away.
4. The person may not be aware that the key is still in someone else's possession.

Whatever the reason may be, it is always better to communicate and clarify the situation to avoid any misunderstandings or potential issues in the future.