That's fucking amazing. I've never thought of that before. "This loss, or separation, from the womb creates that longing for another, the search for that "missing piece." What an interesting concept. Damn.
I took a class last year on human nature and love was our main topic, it was so interesting and I seriously did my own case study about love. My teacher and I developed that little theory and it has just stuck with me ever since, it makes so much sense to me.