Is There Just One?

I'm enjoying a lazy Sunday morning listening to Oregon Public Broadcasting. I was expecting Cartalk, followed by Wait, Wait Don't Tell Me and What Do You Know? Unfortunately the radio schedule is a bit different this morning, so I am listening to This American Life and Cartalk.

On This American Life they are talking about "Is there just one person out there with whom you are supposed spend the rest of your life?" Is there one perfect person? Is there one person with whom you are supposed to spend the rest of your life? Or, are there lots of people who would be a great life partner? They are tackling that question now. What do you think?

UPDATE Per request, my thoughts: I view this question through a lens of hierarchy. Theoretically any one of us could spend the rest of our lives with anyone else, but, as we all know, some people match up better than others. Therefore, there is one person out there with whom I would match up the best (which does not necessarily correlate to perfectly). Of course, there is probably someone who is a really really really close second, and third, and so on. So, while I believe there is that one perfect person, the pinnacle of compatibility, there are many people that would be amazing partners in life.