" Something in me didnt believe that. I read it again, trying to make sense of the old-fashioned language. Mason watched me curiously, looking like he very much wanted to help.
"Maybe they were hooking up," he suggested.
I laughed. "He was a saint."
"So? Saints probably like sex too. That 'brother and sister' stuff is probably a cover." He pointed to one of the lines. "See? They were 'bound' together." He winked. "It's code. "

― Richelle Mead , Vampire Academy (Vampire Academy, #1)