1. Apologize: First of all, you should sincerely apologize to your girlfriend, express your regret and determination, and make sure that she knows your dissatisfaction with this behavior and your sincerity in apologizing.
2. Admit your mistake: You should seriously reflect on your behavior, realize your mistake, and promise not to repeat such behavior. Make an agreement with your girlfriend to clarify the expectations and rules of both sides of the quarrel, so as to communicate better and avoid similar situations from happening again.
3. Compensation: If you have caused harm or pain to your girlfriend, you should consider giving appropriate compensation, such as providing medical expenses, buying gifts or making compensation in other ways.
4. Seek help: If you find it difficult to control your emotions or violent tendencies, you should consider seeking professional help, such as a counselor or psychologist.
5. Keep your distance: Before solving the problem, keep your distance from your girlfriend so that both sides have time and space to think calmly. This is not to say that we should break up completely, but we need to give each other time and space to deal with emotions and solve problems.
The most important thing is to take what happened seriously and take positive actions to ensure that similar behaviors will not happen again.