Is there just one person in the whole world with whom you can share everything, who gets you? I had believed so, but now I doubt it. It seems probable that you might have more than one soulmate, only finding one takes so much effort - it would be difficult to find another! (Just like there is likely to be life on other planets - it seems unlikely that the earth is the only inhabited planet in the entire universe, doesn't it?)
The idea that there is just one person in the world who is meant to share your life is very romantic, but also very sad. What happens if something goes wrong, if one of the two dies? Is the survivor to spend the rest of her/his life missing her/his partner? The Guy and I aren't happy being apart for more than a day or two - and a lifetime of such misery seems overwhelming. I would like to think, if something happens to me or if we break up, the Guy would find love and happiness again.
But if you admit that you might fall in love more than once, is it possible to be in love with more than one person at the same time? It would be unlikely because once you find one soulmate you are likely to be more impervious to others' charms. But isn't it possible that you have two amazing best friends whom you find attractive?