He knew he was going to have to go into battle with me.
Why do you think there would have to be a battle?
Because I didn't want to be there.
It's understandable that you didn't not want to be somewhere. However, don't go into it wanting to battle, have a casual, calm conversation about it.
I don't care. I'm going to do whatever I want.
Going into a conversation heated like that will only result in bad outcomes. Try and have a more civil conversations.