In your subconscious, he is a sinister villain.
Second: I think you broke up because you couldn't stand something about him.
Such as living habits, personality and so on. So you don't want anything to do with such people.
Third: I want to break up, and then you are irrelevant.
But you still live under his topic, which makes you very disgusted.
In fact, dreams are just a true reflection of your heart, so don't care too much.
If you keep someone's mouth shut, can you still control him?
All you can do is warn him that it's over between you.
Please don't discuss any more about me and you.
You don't need to be serious with such people, just be yourself.
I wish you progress in your study! Live a happy life.