"Maybe. But if we can't, I'll still--y'know. I'll still have to..." A deep breath. "And if there's people from ahead in time, and in all this time I haven't been there... We change the future, and it might change our past, won't it? Like if we change things, it changes the people here from the future because different things happened, and it changes our past on the ship that involved them, and..."

He buries his face in his hand. All this...all this is so damn complicated. Give him a bad guy to punch please. He wants to do the brave face, for her, but she's crying, and he's had everything dropped on his head at once.

She's the only person in the world he'd just...let see him like this. Everyone else gets the brave face.

"All I know is...it's not fair. I'll do what I have to, but it's not fair."

When he looks up at her again, tears are streaming from his eyes.

"Five years is not enough time."