Second, there is nothing wrong with plastic surgery. You are still you, and communication in your is still the same as in the past. State this and tell you that your feelings for him will not change. Ask him what he cares about. Why can't you accept the knot?
Third, if he cares, he might as well let go and find someone who doesn't mind continuing.
Whatever you choose, you are right. You can stick to your plastic surgery. He can stick to his nature and tell the truth. No one is afraid that the child will grow too ugly in the future and destroy the gene, so it is understandable that he wants to break up, and you should not think that he is too much. You can find someone who can accept your plastic surgery and not dislike you.
If your boyfriend cares, maybe he wants to see the real you. Many men have straight male cancer and can't accept many things from girls, which only shows that you are not suitable. There is the right person waiting for you. It's better to leave now than to get married and have children and find yourself having plastic surgery. Otherwise it will be more painful.
Looking at this matter carefully, I think it is more likely that your boyfriend is insecure. Because purely from the perspective of preference, there is actually a lot of room for compromise, and only touching the softest place in the heart will cause such fierce resistance.
First, cosmetic surgery will make your boyfriend feel out of control. With the improvement of beauty's self-confidence, her boyfriend will feel that her girlfriend will lose her sense of dependence on herself and easily provoke other competitors, which makes him very uneasy.
Second, he may care more about other people's comments. This kind of thing about a girlfriend's plastic surgery must be that negative comments have the upper hand and may become a stalk in his interpersonal circle. Being talked about behind his back also made him feel insecure and had a sense of being peeped at.
So it is more important to communicate and then take decisive action without hesitation.