Many years ago I had a female friend. We were very close. I introduced her to several of her boyfriends. She cried on my shoulder when they broke up. I once walked her home, no mean feat because it was after school and she lived 18 miles away.
Five years later, we ran into each other in Texas. I convinced her to quit her job and we moved to California that night. We've been married for 14 years now... it turns out my just-perfect-for-her friend was me, and she was the just perfect one for me.