Okay, so I asked my mom what "Nikui hito" meant (I had trouble with that when writing the summary), and she told me it depended on the context. In this case, Lyla/Dante was sorta making fun of Edward, so she translated it as "lover boy."
Of course, this at once reminded me of the song by L'arc-en-ciel that just HAPPENS to come after "Ready Steady GO" on their Smile CD. And I burst out laughing.
I am in dire need of an icon of this. Being cursed by having only a pathetic Paint program, I am unable to alter sizes of screenshots (nor can I take any screenshots myself). So would anyone be kind enough to make me an icon base of Ed and Rose dancing? I would appreciate it ever so much!!