For a girl,
she starts to imagine stuff,
think about stuff that is not real,
But end up being sad, happy, hopeful or mad about those stuf.
For an example,
when she start to know a guy,
She start to judge to every little things the boy does,
and jump into conclusion what type of guy the boy is.
The problem is,
You need longer than a week, a month or a year, to know someone.
And for me,
everybody is different.
There is not 'type'