Religion conflicting with my relationship between me and my girl?

okay, I am 17 years old and have a girl I've been with for about 4 years now. We are really serious and have a lot of plans. The problem is she doesn't respect my religion. I am Rastafarian, she dislikes it and isn't afraid to tell me so. She is always trying to get me to eat meat and break other beliefs I have. The biggest one is she doesn't want people to know I'm a Rasta. I am white, but in Inity to me, it doesnt matter. The main thing is she is willing to break up with me if I get dread locks. Its very symbolic of the lions strength and I would be proud to wear them. But she's willing to toss our relationship (a serious one that is) over my religion and appearance. Anyone have any ideas on what I should do ?