A question I had

I'm so sad today. I've been trying to keep my posts happy but once in a great while I have to give in and indulge in a little self pity. I'm wondering about men. Specifically, I'm wondering if there is such a thing as the "ONE". Now I've always been a bit jaded... but I am fortunate to have been in love and have that wonderful feeling. The thing is that it comes and it goes (the feeling that is) I mean I've been married and I though he was the one I wanted to spend my life with, have kids with, get sick and old and take care of each other for better or worse etc... but then that changed...worse got to be to much and we happily went our separate ways. Now this has happened a few times in my life (only one marriage but a few relationships) with men who I really thought were the one but were not. So, this is the burning question...Is there such a thing as the "ONE" or is it possible for any of us to be perfectly happy with any other of us at the right time or in the right circumstance? And if there is no such thing as the "ONE" where dose that leave us? where dose it leave me? Doomed to enter into serial relationships earnestly looking for the "ONE" who exists only in my mind? Oh well, I was just wondering....