I'm not going to listen to my roommate
Why don't you want to listen to your roommate?
He acts like someone else is telling him what to say.
Even if they're your roommate, they are still living with you all the time. It is important to be respectful and kind to ones you are always with, and you do have to listen or your relationship will become more and more rocky.
We aren't friends. I doubt they understand me that much.
Communication is vital when you live with someone else. It might be a good idea to look for new living arrangements if you can't reconcile.