Tomorrow, she’d be someone else. But hopefully alive, and that was what counted, right? She’d look at me with the same eyes, sort of. Smile with the same lips, almost. She’d still know me better than anyone who didn’t have full access to the inside of my head. Leah might be an interesting companion, maybe even a true friend – someone who would stand up for me. But she wasn’t my best friend the way that Bella was. Aside from the impossible love I felt for Bella, there was also that other bond, and it ran bone deep. Tomorrow, she’d be my enemy. Or she’d be my ally. And, apparently, the distinction was up to me.

Jacob Black, Breaking Dawn, Chapter 17, p.345