Valentine's Day Quotes of Love

Yesterday people on ... uh, a place I visit on the internet (I'm never sure if we're meant to talk about Fight Club or not) ... were talking about their favourite 'ship moments in honour of the date. I started making a list of quotes, and then realised that I would be taking up the whole page. So instead, I'm posting them here. Name the source of the quote, win a prize! And by prize I mean some kind of ficlet about the pairing in question. (I am going to have to make a 'one per customer' rule, though, because some of you could probably name more than half of these.)

Some of them are so easy that anyone familiar with the sources would remember them, but there are also a couple that I doubt anyone will get. Feel free to surprise me, though.

I've refrained from including multiple versions of the same characters, although there's one instance of blatant cheating. They are listed in an order that makes logical sense to me, for what that's worth.

( People - well, mostly people - in love below cut. )

You know, I saw that 'name the character types and tropes you think I like' meme going around and decided it would be too obvious. I think this sort of proves it.