[ marty can understand that. he really, really can. ]

Y-Yeah. I didn't mean to, y'know? I just wanted to go back to my time. I think I changed my dad more than my ma, to be honest. Before I left he was really...[ He was a big fat chicken, that's what he was. ]...he wasn't confident with himself. But I changed some stuff to get my mom and dad back together, and he believed in himself enough to change himself.

...I kinda don't know if I want to fix it. They're a hell of a lot more happier than they were. Is it right to change that?