Interesting. My husband was number 5 of 6. It didn't last too long. After that the one relationship I had that lasted the longest was with a man who was the oldest of 2. They were both a pain to live with. But as my sister says, "when it comes to men, your picker is broken".Another thing about birth order, is that often the older siblings marry a person who was the baby of their family or at least one of the younger ones. So the dynamic is a familiar one. Mr. Garnet was the baby of his family, and I usually find myself urging him to be more responsible, or having to remind to take his vitamins, etc.