The issue I have with the soul mate theory is that people can and do change when they want to, when that happens your "soul mate" would also change, basically nullifying the entire concept.
Edit: I should say though I completely agree (about everything except the predestined part), people need to keep an eye out and know what they want, and not just physical qualities.
Edit: I should say though I completely agree (about everything except the predestined part), people need to keep an eye out and know what they want, and not just physical qualities.