So girls, I need some advice on what this means. So, I know this girl whoes from my college classes, and we're friends on facebook, but we dont really talk much. So, this weekend was my birthday, and she posted "happy birthday" on my wall, which I was surprised, cause she's one of the friends I'd least expected to notice its my birthday, and i've never had a girl say that to me before. So I saw her happy birthday message on my wall, and liked it, and then I replied on her wall with a "thank you", and she liked it. After that, we even had a nice casual conversation, and she seemed comfortable with me, and she even said, "have a nice birthday" just before she went offline. Does this mean anything, or was she just saying it as a friend? I just turned 22, I've never dated before, and I don't really have many friends. I'm also very shy around girls. Some advice would be appreciated, and thanks in advance!