Are we just friends?

Hi, so where do I begin. There is a girl that I have been hanging out with lately. We started out just working together for a few months and became good friends. We hung out a lot and all of my friends would give me crap about us “dating”. They knew that she had a boyfriend but would jokingly suggest that there was something going on with us. I am also kind of friends with her boyfriend. We are all in college still so we still go out to the bars on a regular occasions. She regularly complains about how her boyfriend doesn’t ever go out, and frequently refers to him as being “gay”. She comes over to my place a lot and we hang out and we spend a lot of time together. She has told me, when I have talked about my relationships with other girls, that I deserve someone “really great”. I often wonder if she would be that person. Is there something more than friendship going on here? I can’t tell what the future holds. I just want some advice on how to approach the situation and what you think is going on.