Jesse smiled. He liked hearing that, that Cas wanted to be at his side, willingly. Chose it, even. Would fight to make sure he could have that choice.
Then he laughed. A good natured, happy thing. He patted Castiel on the back and couldn't stop grinning. Changed. That was wonderful.
"Well thank the fuckin stars above fer that." He turned slightly to lean on the bar and watch the angel. "There's some things in this world that ya hope don't never change, like the way steak tastes, and yer favorite beer - cause changin the recipe on that shit's a real mindfuck. But livin things, people, angels, hell, even dogs, they gotta change. They can't always stay the same, it ain't how the world works. Gotta be able to bend when the storms blow, or you'll break. Ya learn shit, you apply that learned shit to yer life, it changes ya."
Jesse patted Cas on the shoulder again before turning back to his drink. "Wouldn't have it any other way, featherhead."