It was only the tiniest twitch. But it was enough for Sam.

He was still leaving. Even though at the back of his mind he'd hoped Dean would argue.

He wasn't angry. He had no right to be. After what he'd done, he didn't blame Dean at all. And thinking about it – it was amazing Dean had put up with him for so long.

If he could sort himself out on his own, maybe Dean could start to trust him again.

For now though, Dean's tiny facial twitch was enough to hold on to.

It meant there was still hope.