Soul mates

I have been thinking more and more these days about soul mates.   It seems that when I start thinking about something I hear things about it whether it be a television show, radio, or internet.   Interesting thing, I was watching a television show last night and the characters were talking about soul mates and whether or not the other one believed in such a thing.  Then one character said it was Plato who first introduced the idea of soul mates, he said something about people having two faces, four arms and four legs and that all people were perpetually looking for their other half in future lives.  I think it is an interesting subject.  How do you know when you find your soul mate?  Is it just something you know when it happens?  Do you think it is that person that you can just sit with and not have to say anything and yet feel like you have had an entire conversation?  What about the person that you can finish each others sentences or saying the same thing at the same time?  Is it that person that you just have that deep understanding that you know everything about them or is it the comforting feeling you get when you are in their presence?  Is it the person you have so much in common with or is it the one that is your opposite in every way imaginable but yet you both thrive off of that?  Is it the person that you can tell anything to and know that they won't judge you?  Or is it the person that you can joke with and know that they get your humor?  Is it the person you are with now or do you think you will ever find that person in this lifetime?  I have heard people talk about being married to their soul mate and when they lose that person they feel like a part of them is missing.  Do you feel that way about the one you are with right now?  If you aren't with your soul mate do you think you would ever look for that person?  All these questions and the only one that can answer them is you!!