Cersei Lannister: I heard a song once, about a boy of modest means, found his way in the home of a very prominent family. He loved the eldest daughter. Sadly, she had eyes for another.
Lord Baelish: When boys and girls live in the same home, awkward situations can arise. Sometimes, I’ve heard, even brothers and sisters develop certain affections. And when those affections become common knowledge, well that is an awkward situation indeed, especially in a prominent family. Prominent families often forget a simple truth I found.