Ex is mad because he broke up with me?

I gave my ex an ultimatum of either giving me a small break or break up with me. He choose to break up & so I blocked and moved on. The next morning he hmu on another number saying ‘you have until x days to change my mind. (Which is weird because he was the one who broke up with me) so I told him it was his decision and my mind was set. All of a sudden he got mad at me and told me to never text him and he’s never coming back. I don’t understand what I did wrong?
Ex is mad because he broke up with me?
Ex is mad because he broke up with me?
Post Opinion