Have you spent much time with this girl in the past? If you have, and she hasn't made a point of trying to convert you or go on and on about her religion, I don't think you'll have a problem. There are many religious people who are open-minded and understanding about other peoples' beliefs.
However, something you might want to consider is if she spends a lot of time at the synagogue, or whatever Jewish club is on your campus, she won't want to stop going in order to be with you. She might want you to hang out there with her once in a while (this isn't necessarily her trying to convert you. But if her social group is there, then it makes sense for her to want to spend a little time there with you). Also, if she is very religious and has friends who are Orthodox Jews, they might not be as accepting or as adverse to trying to convert you (which is out of her control)
Just a couple of things to think about. If you really like this girl, then that shouldn't get in your way though. Good luck!
