Smoking is uncivilized, it is harmful to health, it will gradually affect a woman's appearance and temperament (resulting in dry skin, yellow teeth, bad smell ...), and it is also not conducive to your prenatal and postnatal care after marriage. You should also set an example to show your determination and sincerity in opposing smoking. There is nothing to do. If your girlfriend smokes after falling in love with you. You accepted it then. Just accept it forever. Because you didn't stop it. There is no need to say what to do now. Second, if your girlfriend smokes before falling in love with you again. Then don't stop it. Because you know she smokes. You accepted this relationship. I accepted everything about her. Then accept it from a distance Don't ask what to do.
You can persuade her indirectly. Besides nicotine, a cigarette contains hundreds of complex chemical components, most of which are harmful to human body. Research shows that female smokers are more harmful to health because of their special physical structure and physiological characteristics. My girlfriend used to smoke. Later, I looked up the harm of female smoking on the Internet and explained it to her. She also gave up smoking. The key is whether you are willing to accept the fact that she smokes. If you can accept it, then this is not a problem. If you can't accept, you must communicate with her. You can explain to her the disadvantages of smoking and its influence on later childbearing. A woman is still not immune to children. The most important thing is to express that you don't like her smoking. This must be made clear, otherwise you don't mind saying it, which will definitely affect your feelings in the future.