It's always "just being friendly".
There is a very simple trick I'm using which I want to share with you. Go for a simple touch. It can be as simple as an arm or shoulder and look into her eyes while doing so. Her eyes and body reaction will tell you without doubt if this is a friendly or a flirt. Thank me later.
Is she into you? - can't tell
Just talk to her back, see is she enjoys it, if she is curious, try to ask her to go somewhere. If all is good, chances are she wants to date you. Not that hard, really. Unless she is super shy or bitch, but that is not your fault.
I still think of this one time a random girl came and put her candy bag in front of my face to let pick some from her I was like thanks and from then i greet her when i saw her but never thought of trying to flirt with her
Its actually quite easy to figure out. The trick to it is: If you dont flirt back, she was flirting. If you do flirt back, she was just being friendly. You can Thank me in a couple of years when you realise.
The funny thing is everyone missing the point of this clip, the shelves are empty other than this one memory. It comes to show how little random affection guys receive (especially from women) and that is what makes it hard for some of us to tell the difference between a flirt and just being nice.
Ah, yes... The quantum superposition feelings