I broke up with my boyfriend yesterday. He sends me messages at night and chats casually.

This shows that your boyfriend still cares about you. Reluctant to part with you. Your boyfriend is separated from you. I'm mad at you, too. In fact, I still hate to part with you. Maybe your boyfriend can't bear to part with you because he is used to you, so he didn't send you a message. You, not him. He may not want to share it, but he cares what you think. It seems that he can't let you go in his heart. Maybe he wants to see if he can save you and feel your true thoughts. If you can really put it down, don't talk to him again. That would hurt people. Now that you have decided to break up, do you still miss him? If he wants to talk to you casually, just talk to him casually. If you can't be lovers, you can be friends! There's no need to be enemies. Your boyfriend may not have accepted losing you, so chatting with you is a habit. If he forgets, he won't talk to you. I feel that the questioner should be very young, and the so-called relationship may be just for fun. True unforgettable love is not just for fun, so if he just chats like this, he may not really love you, but just want to catch up with you. He doesn't feel sorry or sad.