Souls need not know what question they are, and naturally they do not know it, but they are a question all the same. Neither do they know what the answer is, but when it comes they know that it fits, they know that it is satisfying, and unconsciously they know that it is the answer to their question. It may be that the two were friends before they came on earth or, as many call it, in a past incarnation, but there is no doubt that a contact had been established before their coming to earth, and that is why the moment they meet they think that they have known each other for many, many years.