What to do when he seems uninterested?

Look at what changed. If the early messages were long, playful, and full of questions, and now he answers in four words and never asks you anything, the drop is the signal, not the words themselves. People text less when work gets heavy, when they are seeing other people, or when they have lost the thread and are waiting for a reason to speak. Most of the time you cannot tell which from the screen.

What matters is whether he still picks the conversation up when you give him something to pick up. A man who is only busy will reply warmly to a specific question. A man who has checked out will answer the question and stop there. Pay attention to whether he ever starts a topic himself, or only ever follows yours. If he has not originated anything in several days, treat that as the real answer for now.

When he is low on effort, a message that asks for a long answer gets skipped. Try a message that makes it easy to respond, such as a single concrete question about something he already mentioned, or a small observation that invites a one-line reaction. The point is to lower the cost of replying so that a man who is only mildly interested has a reason to answer.

You can tell a draft is doing this when it refers to something specific he said earlier and does not need a reason to be sent. It should not pressure him to commit to plans, explain his silence, or say whether he is into you. Leave out anything that begins with checking in, anything that flags the gap, and anything that is secretly a test.

Timing matters more than most people expect. A message sent when he is clearly busy or half asleep will be read as an interruption, while one sent in an ordinary part of his day reads as normal. If he usually replies in the evening, do not send your message at breakfast and then wonder why it sat.

If you have sent something and he has not answered, give it a real window before you do anything else, usually a day or two for casual texting and longer if the thread has been slow for a while. If the silence runs past that, do not send a follow-up that says you noticed. Let the thread rest. If he comes back, answer warmly and plainly. If he does not, you have your answer, and the right move is to stop spending messages on it and put your attention somewhere that replies.