According to your description,
1, your brother has been spoiled since he was a child, and he is a bit headstrong (he just wants to get along with this girl now, making it clear that he must learn when he gets it).
Laziness and cowardice are also problems in family education.
Children in single-parent families are psychologically fragile and insecure, especially when their father, who was originally in charge of disciplining him, died. The doting mother may be more indulgent to the child from psychological compensation.
4, too self-centered, do not respect and cherish family members (have a tendency to lie and speak ill of my mother)
Based on the above, I really think that compared with these personality defects and personality defects, it's no big deal that I can't go to college to repeat my studies!
I understand your nervousness. I suggest you:
1. The goal is not puppy love, but to rebuild personality. You know, a person's success is definitely not as simple as a few points in the college entrance examination, and personality is very important. Your brother's problem is very serious at present. If he is not corrected, even if he is admitted to the university, it will be very troublesome. He may be adversely affected at school, and you will be beyond his power.
2. First, talk to your mother. If possible, you should pay more attention to your younger brother. If you persist, you must first ensure that your mother supports your work and stop indulging your younger brother too much.
3. Because your brother is in the third year of high school, and his personality is basically formed, it is very difficult to correct it at this time, but you should have the determination to struggle for a long time, don't provoke your brother, don't have excessive behavior, but guide him and tell him that "your requirements will not be fully met."
4. Give him a little pressure, let him know that he is the pillar of the family after his father died, be sensible and affectionate, and use tears when necessary, but pay attention to his mood and environmental atmosphere at that time.
To sum up, I think you should forget the college entrance examination this year and change his temper quickly, so you should make a choice in education. Divert his attention. From the point of "getting", I'm worried that he will harass that girl. If you do something bad, your brother's life will be ruined. Besides, everyone has a long life. That girl doesn't contact him now, and she is preparing for the college entrance examination. You can't let your brother interfere with their study. It is necessary for you to set up some obstacles for his "puppy love behavior", but you can't let him find out and ask him for help.
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Sister, judging from the current situation of your supplement, in fact, your brother's rebellion and emotional development are very common at his age. He thinks everyone has ulterior motives, and this age is normal. So basically, except for his personality defect itself, other problems are not a problem. I'm not afraid of your laughing at his idea. We all went through it then. I don't think it's anything new to fall in love without studying. In fact, other students with good grades may not have these thoughts in their hearts, just because they are sound in character, can distinguish what is more critical and know when to do what.
You are not at home now, the first thing to do is to communicate with your mother. You must do your mother's work well and take the time to educate your brother.
I don't know how far your brother and this girl have developed. Do other girls know what he thinks? He wants to take the girl home now, will she? If possible, first follow his instructions and let him bring the girl back. Senior three 18 years old, also an adult. You can look at this girl and see what she thinks of your brother.
Then find a chance to talk to her alone. If other girls mean that, I still think that 18 years old is no longer puppy love. You think your brother is daydreaming, but girls really make friends with him, with good grades and good conduct. With the power of love, maybe they can bring your brother here, which will be of great help to your education. Middle school students' falling in love is not a particularly serious problem. Teachers and parents can help each other if they pay attention to guidance. Isn't there an old saying that men and women are not tired at work?
But one thing you must pay attention to! Your brother said that "the college entrance examination can tell him the answer". You must pay attention to this problem. Cheating in exams is not only a matter of grades, but also a stain of life. You must make him dispel this wrong idea of being on the wrong team.