I found one of my own pieces of wisdom in a most unusual place; Sons of Anarchy. Katie and I were watching it the other night and one of the women was trying to explain to her boyfriend/husband how he was right for her when he was trying to tell her that she'd be better off without him. She said, "We don't know who we are until we're connected to someone else. We're just better human beings when with the person we're supposed to be with."
I've been telling the girls for years to find that person who will make them the best that they can be. You need to find someone who will make you the best YOU you can be. When you find that person and you both make each other better than you are as individuals, when the two parts create a better whole than they do parts, then you know you've found your soulmate. You make each other the YOU's you're meant to be.
You know, I think it's that way, too, when we are in communion with God. We are fulfilled. We are complete. We're where we're supposed to be. Do you suppose that's why he modeled marriage after the church's communion with Him? It's much easier to visualize the way things are supposed to be with Him when we have our own earthly model of how things are supposed to be with each other. And vice versa.