Dean rose a brow at that, pausing for a moment. Well, that was different. He hadn't heard this speech since way back before Dad died. It was back then that Sam was insistent on being normal as soon as they found the old man. It was back then when maybe he could have actually been normal, for a while.
"...Alright. So, what, we just go through the motions, and avoid the crap out of each other unless we have to work? 'Cause if that's what you're saying, then I want out now." He wasn't able to separate his emotions for his brother from anything, it was part of why he and Lisa didn't work out. That and the whole hunting life.