But trust me when I say that memories are funny things. Sometimes they're real, but other times they change into what we want them to be... But like I said, she's hurting, and if there's one thing I've learned, it's that people in pain don't always see things as clearly as they should... And if it somehow doesn't work out between you, then you've got to understand that you can't look back anymore. It'll destroy you in the end, and destroy her as well. Neither one of you can keep living with regret, because it drains the life right out of you, and the very idea is enough to break my heart.

Tuck Hostetler, Chapter 15, p. 218-219 - The Best of Me (2011)