Thing is what's "too friendly"?
Where is the line drawn after which someone becomes "too friendly"?
It's subjective. I don't know any girl who's too friendly but a guy I know who smiles and laughs all the time, and I mean all the time in each conversation. Catching that guy not smiling or laughing is like hearing a howl on a night with a full moon in a clear sky, it's eerie. That is too friendly.
I can see a girl being flirty, rubbing, touching, making eyes with each guy, that's too flirty. What's too friendly for a female?