Hmmm...this is interesting, I don't know whether I buy it, though.
Mr. Inspectorette is an identical twin. It just so happened that I met his brother before I met him, and thought he was a rather nice-looking man, but that was it. No interest whatsoever. However, when I met Mr. Inspectorette a couple of months later, the minute I laid eyes on him my little heart just went pitter-pat, and I knew I'd follow him anywhere. And I still would.
I don't think I buy it either. I can think of many married men who are not exactly what you'd call flamboyant or exciting and are just regular good guys. I also know that when a girl starts saying a guy reminds her of her dad, she's likely to end up announcing her engagement real soon. I don't know about the girls raised without dads though.