I was in the exact same situation with my last ex. (fiance of 5 years)

The best thing I can tell you is if she is unwilling to come around for you, she isn't worth it. When becoming romantically involved with someone they should accept / love you for YOU. You shouldn't try to make drastic changes to yourself to please someone (sure losing a few pounds is ok, or something like that). But trying to cut out something in your life that is a major part of who you are will only make you unhappy, and relationships are supposed to make us happy, aren't they?