Does she have a crush ...?

well ive been going to muay thai kickboxing for a while now and theres a girl i have seen in a few of my cles that ALWAYS stares at me . for example , when i hold the mitts up for my partner to hit , she would be staring at me but straight away looks away when i look at her . not only does she look at me when i hold mitts , but when i talk to people , listen to the trainer when they are talking to me and when i skip with a rope , basically all the time . she is VERY attractive and everything . what do you think ??? should i talk to her ??? what should i say ???