What does it mean that my boyfriend is angry and doesn't answer the phone or return the message, and sends you a message the next day?

When my boyfriend is angry and doesn't answer the phone or return the message, he will send you a message on his own initiative the next day, which may have the following meanings:

1. He may be expressing his dissatisfaction with you, but he just doesn't want to say it directly. He wants to make you realize your mistake by not answering the phone or returning messages, and then apologize to him.

He may be emotional that day. When he calms down, he will take the initiative to contact you and try to make up.

He may have forgiven you, but he didn't want to answer the phone because he was still angry. After the mood calmed down the next day, he realized that the feelings between you were very important, so he took the initiative to contact you and wanted to continue your relationship.

The above is just a possible explanation of boyfriend's behavior, and what it means may need to be judged according to the specific situation between you. I suggest you communicate directly with your boyfriend to understand his real thoughts and feelings, so as to better understand his behavior.