Ok guys, I need some good advice here please! Just started taking up fitness classes at my gym (yoga and stuff), and well I've got the hots for the instructor, really hot girl.

Is it cool to make a move on your gum instructor? In the most likely event she will turn me down cause she is so hot and Im not, and also most likely has a boyfriend (I know limiting beliefs.., but most likely true!). After this it would be really awkward seeing her around the gym and in the classes..

If I was to try it on, how could I go about it? I have spoken to her, just general talk about how good the class was etc, know her name and where she is from. But that was it. There is usually only a shot time to have a very short chat after the class, then she's off.., and small talk is something I am really not good at, and then to introduce any flirting.., I dont know if I can do this! What do I say next time? ...any advice?