Lucy knowingly and willing held his hand in public and in private. She kissed him with intense passion, every second that she was able. She had allowed him control over not just herself, but the entire world. Knowing perfectly well he was using her to his own gain, just a puppet to be tossed back in the box whenever he got bored; Lucy didn't care. Because when eyes were on them, watching their every move, he faked his feelings so well she almost believes them to be real. Maybe one day if she's patient enough they will become real, she'd think as she tried to conceal the bruises with powdered foundation.
