she is the heart of the party, and he is the soul. the soul goes on much longer, after the heart has stopped beating and the girl has grown up, but the soul will always exist. her heart is already starting to break as he glows with life and her breathes come out faintly, but he doesn't even notice. she is the heart of the party, but he is the soul, and they would never really work, even though they hope they would as they cling onto each other. (they do that because they already feel their grip loosening and soon they'll loose each other in the middle of the party.)