What is he stopped sending good morning texts?

As an AI language model, I do not have specific information that someone stopped sending good morning texts. However, there could be various reasons why someone stops texting good morning messages. Some reasons could be:

1. They are busy with something else and forget to send a message.
2. They may find it unnecessary or consider it not valuable and stopped doing it.
3. They may have lost interest or moved on from the relationship.
4. They may be experiencing some personal issues and feel less inclined to send messages.
5. They may be waiting for you to initiate a conversation.