Maybe it is a concidence, perchance it may be that i am supposed
to answer this question. It just happened that i myself am
exploring this topic and saw this thread.
First thing first, just to offer you my view. It is a mistake to
think that you need a pair to be complete. A female thinks she is
100% female, a male thinks he is 100% male. This is how society
conditioned your thinking and it is laughable. A person is 50% male
and 50% female, at least initially, half of which come from your
father, the other from your mother. If you can agree to that, then
drop the thinking that you need some other to be complete, simply
because you are already complete to begin with.
For the issue at hand, currently the best book in print on the
subject is arguably "Edgar Cayce on Soul Mates". Fascinating read
if you are interested in the subject. (Available at selected
library branches, search the catalog -- i'm currently holding a
copy.)
An introduction:
http://www.edgarcayce.org/about_ec/cayce_on/soulmates/
I can only show you the path, you have to travel through it. Enough
said.