This thread is a real rollercoaster of emotions, man.
I love all the quotes in here but I think that if I started to list my favorites, I'd post the whole script.
I gotta say, though, the one that really gets to me is this one: "You have no idea how bad it gets!" It made me bawl like a baby the second time I saw the movie. Hell, the whole scene did.
Also, I don't know if anyone mentioned it, but when Cassie asks Ennis his name, he first answers "Ennis", then there's a small pause and he says "Del Mar". It made me smile.