I agree with Lindsey - if HE wanted to marry a Jewish girl, that would be the girl he'd be looking for. I can't imagine any parent not being happy with the choice their child makes - afterall, it's their life, not their parents. I have 2 boys of my own and all I want is their happiness when the time comes they find the girl God put on this earth for them. You are obviously interested in the Jewish beliefs or you wouldn't have signed up for a class - not saying you will convert to Judaism, just that you're trying to understand a different level with your boyfriend and that's a good thing
The best thing you can do is follow your heart and right now, it's obvious you love him and you ARE following your heart. Keep being true to yourself - that's what he fell in love with you over in the first place!