Brian... you sound like a real shy guy, you probably have gotten them already but have not yet identified them. I have people tell me that all the time. I don't see it when guys do it at all.
Another sure fire way to tell if a girl likes you...the giggle and the shove. It is a true-ism. I have tried fighting it, but it is a true-ism. If, when talking with a woman, she begins to goggle and gives you a playful shove, you're in.