This question involves personal values and relationship status, so no simple answer can be given. Here are some suggestions to help you deal with this:
Communication: First, communicate your feelings and concerns openly with your boyfriend. Let him know about your concern about his drinking, and express your desire to hope that he will be able to drink less or ask for help.
Know the reason: Find out why your boyfriend is drinking. Is it because of work pressure, social needs, or something else?Understanding his motivations can help you better understand his behavior.
Set boundaries: Be clear about your boundaries and expectations to your boyfriend. For example, you can ask him to limit the amount of alcohol he drinks, avoid drinking in front of you, etc. At the same time, respect his personal preferences and social needs.
Seek support: If your boyfriend's drinking problem is significantly affecting your relationship and health, you may want to consider seeking professional support, such as psychological**, alcohol withdrawal support groups, etc.
Re-evaluate the relationship: If, after an effort, your boyfriend still can't control his drinking behavior or has a serious impact on your feelings and well-being, then you may need to reevaluate your relationship.
The final decision on whether or not to break up should be based on your own feelings and values. If you think that the problem of drinking cannot be solved, or that it has caused too much distress in your life, then a breakup may be a necessary option. If you are willing to give your boyfriend a chance and continue to support him in his change, then you can continue to work hard to maintain the relationship.