I know the feeling... See my avatar!
My wife keeps asking me if I was upset I didn't get a boy... but I gotta tell you... there's just something special about a "daddy's little girl". I'm sure it tugs at your heartstrings and makes you well up with tears sometimes just thinking about your little girl... believe me... that feeling never goes away.
We'll probably have another little one... don't know if the estrogen level will increase in the house or not... but... until then... the girls are totally cool!
Bob