I can tell you from personal experience that most women who like
to flirt have flawed characters in general. You will only see their
true nature a few months down the road if you observe
carefully.
My ex-gf who was previously my colleague and another gal in my
current workplace behave this way as well. Like to mess with guys'
minds. Touch me on my arm when talking or give other male
colleagues misleading signals in conversations, e.g. complain that
they have problems with current bf, etc.
Not saying all women that are 'more friendly' in their body
language or conversation are bad but just open your eyes
wide.