Name That Movie

"Audrey, quick name the movie that this quote belongs to: "You're like my own personal brand of heroin."
 "I don't know."
"Seriously? Think about it."
"No, I really don't know."
"How about Twilight, when Edward is talking to Bella?"
"Oh. All I could think of was Ke$ha. You know, 'you're love is my drug.'"