" What if you could meet your soul mate?" the ghost asked. "You 'd want to avoid that?" "Hell, yes. The idea that there's one soul out there, waiting to merge with mine like some data-sharing program, depresses the hell out of me." "It's not like that. It's not about losing yourself." "Then what is it?" Alex was only half listening, still occupied with the viselike tightness of his chest. "It's like your whole life you 've been falling toward the earth, until the moment someone catches you. And you realise that somehow you 've caught her at the same time. And together, instead of falling, you might be able to fly. "