My Girlfriend is Vegan, and I'm not even Vegetarian. How do I maintain my relationship?

I'm sorry, unless you are both willing to compromise, your relationship is doomed. you know, if you tried to just not eat meat and still ate low fat dairy, it may appease her if it looks like you are trying. But do not, I repeat, DO NOT get married thinking you will change her and her by the same token. Unless you are both committed to making life style changes, this relationship will be fraught with turmoil and you both judging each other. It's not worth it. I'm sure there are plenty of other hot women out there who consume animal products. find one of those and let her go to pursue her lifestyle, which BTW is really so much healthier than yours. No judgment, just an opinion.