Except that she had one age-normal infatuation at age 3-4, my DD is nothing like this. She has no problems playing with boys, but she has no romantic interests.

Some of the behaviors of her classmates... yikes. DD was reporting kids kissing as early as kindergarten. She had a friend at ages 6-8 who acted like a boy-crazy early teenager. It made me wonder, "Whatever happened to the 'boys are yucky' phase?"