Raymond, some women will mention a boyfriend because they think we thrive off of jealousy like they do. I would hang out with her, flirt, etc. as if you never heard her say it. If she brings it up you can tell her that you understand and wish her well (next). Women like to branch swing. It's extremely difficult to find an attractive woman who's single. I never ask them to break up with their boyfriends, but if they do it on their own then it's game on. Your post seems to suggest you wanted confirmation that she likes you and she's using the tutoring as an excuse to hang out with you. I'd say give it a shot.