What is he reads my messages but replies later?

If someone reads your messages but replies later, it could be for several reasons.

Firstly, the person may be busy at the time the message was received and not have time to respond immediately. They may have intended to reply later when they have more time.

Secondly, the person may want to take some time to think about the message and formulate a thoughtful response instead of quickly replying without much thought.

Thirdly, the person could be using a messaging app that shows when a message has been read, and they want to acknowledge that they have received the message but don't have an immediate response.

Lastly, the person may be intentionally delaying their response for various reasons, such as not wanting to appear too eager or wanting to keep a conversation going for longer.

Ultimately, it's hard to know the exact reason why someone reads your messages but replies later without asking them directly. It's important to remember that people have busy lives and may not always be able to respond to messages immediately.