If you send a message to a male friend … say a lot about leaving, the last sentence is take care! If he doesn't reply to you, does it mean giving up?

That's not necessarily true. Maybe your boyfriend is not here. He didn't see the message. Sometimes he may not want to interfere in your decision, but he still can't let go of a man's self-esteem. Various factors may be that no one can really feel the same way with others. If you really like him, you have to say what you think so that others can understand. So if you still like him, just tell him. Seriously, don't let it be a regret in the future.