On the other hand, it seems that the law does not stipulate such a situation. You must combine, and it is not impossible for you to separate. But you are a sinner in people's mouth, you will be despised by people, and you may be drowned by Tucao Star, which is what people say now, you will "die socially". Then you should at least redouble your efforts to get people to agree to your separation.
In fact, marriage is not as beautiful as people think. To believe in fate, many families have been running in and quarreling all their lives. Some families look glamorous on the surface, but in fact they are undercurrent. You may not be sure who is suitable for your girlfriend. Maybe the person you think is the most suitable for you is the one who makes you most unhappy. If you haven't experienced it, you won't understand it. When you experience it, it may be too late to regret it.
In those years when she supported you, why didn't you say that she was not suitable for you? Now that I have crossed you to the other side, your wings are hard, and you don't need this girl with low culture and elegant manners. You can kick down the ladder and find a good reason for yourself. If you are a man, you dare to do it. I admit that you are really not suitable. First of all, your character doesn't deserve her. Now you have a high degree of education, and the people you contact are also highly educated, high-quality, knowledgeable and broad-minded. You are already people from two different worlds, and you will not be happy if you are forced to twist together. However, you should make it up to her. I can't make up for it mentally, and I will never marry her willingly. Just pay her back twice as much, treat her as the closest and best sister, and help her forever.
It's not impossible for you to break up, but you have to do a lot of psychological preparation. At least you may be hurt by public opinion, and your future marriage may make you feel that it is better to marry your current girlfriend forever. Regret at that time, it was a lifelong pain!