To be fair, I have met girls who act like that but didn't actually like me as anything more than a friend. However, I have also met girls who liked me and acted like that as well, and we ended up dating. So while these criteria can't be used to prove that "this girl definitely likes me", neither can it be construed as "this girl is just leading me on."

If you use these signs as a clear indication that the girl is not interested in you, that would be like saying to a hospital patient: "Oh you are breathing now! Last year 20 patients in this hospital died although they were breathing earlier, so you are definitely going to die as well."

Not reasonable right?