Student Exchange Programs

Okay, here’s the story.

I’m a relatively reserved, shy kind of guy and school has just started. There is a girl that is extremely cute and I cannot figure her out. She’s going out with an exchange student who is not going to be here for more than a few more months. I am relatively good friends with her boyfriend and so I see the girl quite a bit. What doesn’t make any sense to me is that she will randomly shout my name and shoot over a smile and a wave (or some random pose and smile) during class. And that’s it. She doesn’t say anything other than my name. I don’t get it.

So, could some ladies, preferably, help me out with trying to figure out whats going on?