Simple question here, at least I'd assume. My main problem is that I have a hard time differentiating between flirting and being friendly. Like to me they seem to be the same. I don't have troubles talking to girls and I'm generally a touchy person so whatever.

I know this girl that told me she was interested in me before but apparently I never got her signals? I always thought of it as just being friendly not flirty...so what is the difference?