You were everything he ever wanted—intelligent, witty, beautiful—but you were also the only person he could never have. You were his best friend's younger sibling, off-limits, untouchable. But the more he tried to stay away from you, the more he found himself falling for you. It was a battle between morality and desire, a battle he knew he would lose.

"Hey," he said one day, trying to sound casual. "Do you want to hang out?"