True, it is not necessary.
If he does something unpleasant for you, you don't have to puzzle over why he does it (or what you said / did wrong).
He considered it possible. And that's all.
Do you want to simplify your life, not waste your time, save energy?
Don't think for another.
Think for yourself.
"What can I do in this situation?" (And not "what should I do to make him ...")
You can say what is unpleasant for you.
You can ask not to do this again.
You can say what you want and expect.
You can suggest something.
All.
This is the border.
Then the "ball" is on the other side.
The other person's right to decide what to do next is to listen to you and meet or ignore you.
Boundaries are where your real possibilities end, your real “in my power”.
"What depends only on me, what can I do?" - the first question to ask yourself in any incomprehensible situation.
Live in love and understanding!