My sister fell in love when she was only 17 years old. How can I enlighten her?

I also have a sister. She is very cute and sensible. I was also anxious when I learned that she was in puppy love. My first thought was to organize her, but when I succeeded in organizing her, I found that I had hurt her. I feel distressed because I just want to protect her, not hurt her. But she never mentioned it again after that. In my opinion, you shouldn't take a too strong attitude and chat with them often. Nowadays, the post-90s generation are very rebellious, otherwise they will be self-defeating. First of all, you should tell him what his future life should be like, and tell her the educational stories you know. Let them compare their current mentality when communicating with you with a normal heart, and it is best for them to understand themselves. As I often say to my sister: Sister, you are a good girl who is very obedient and sensible. Only those who are conscientious and have strong self-principles will give you happiness. Look at the relatives around. If one person in a family is timid, the family will be unlucky and looked down upon by others. Look at XXX He is puppy love. Everyone thinks he is a troubled young man, and you still tell me that he is not good. Don't be a person who keeps others being pointed at by me. The road ahead is still very long. There are many good boys after college or work. When you look at the sky a little bigger, you will find that you feel good now, but later you will feel that it is not that good, and people should be like this. You can also persuade according to your personality, but don't let him think you are preaching, or he will go in one ear and out the other. It's really difficult, but what can we do? It's hard for us sisters to do it. But as long as we are willing to work hard, no matter what the result is, it will be fine. I wish your family happiness, health and happiness!