Many great sages believe that the best way to find your true soul mate is not to look for them. Eventually, a soul mate will find you.
How To Find Your True Soul Mate (http://www.spiritnow.com/article/love/how_to_find_your_true_soul_mate_329)
Actually, it depends on the basis of the fundamental requirement by fulfilling both of them. The as usual concept isn't true at all, it differs from person to person.