Have you ever wondered?

I don't know if this is real or if God when He created the world, did He ever thought of making an "Eve" for every "Adam". How can one person be so attached or in love with some one he barely knows and then take forever to let go?

I just watched "Hancock" and there it seems to have some explanation in there but that is hardly even biblical.

You know I wonder what was it when He made us. What did He placed inside of us so that we always tend to fall for a certain someone? I know many don't believe in "love at first sight" or "I was made for this one and only person". I too don't because I have fallen for a pretty good number of girls, but I never seem to ever let some of them go. I still pretty much think of Vanny, I still do think of Glenda, I still get interested in Shan's life and I do get a tinge of jealousy when they give other guys attention. I don't understand why I get so attached and put myself into so much misery.

I've been pondering about this verse:

For You formed my inward parts;
You covered me in my mother’s womb.
I will praise You, for I am fearfully and wonderfully made;
Marvelous are Your works,
And that my soul knows very well.
Psalm 139:13

I often wondered, why fearfully? What is it? Is it the awesomeness to be made in the image of God Himself? Please Lord reveal to me this secret that I may know what is upon Your heart!