Eleanor & Park by Rainbow Rowell

"Bono met his wife in high school," Park says.
"So did Jerry Lee Lewis," Eleanor answers.
"I'm not kidding," he says.
"You should be," she says, "we're 16."
"What about Romeo and Juliet?"
"Shallow, confused, then dead."
"I love you," Park says.
"Wherefore art thou," Eleanor answers.
"I'm not kidding," he says.
"You should be."

Set over one school year in 1986, Eleanor & Park is the story of two star-crossed misfits—smart enough to know first love almost never lasts, but brave and desperate enough to try.