I can offer some general possibilities why your boyfriend may not enjoy drinking with you:
Personal preference: People have different preferences when it comes to social activities. Your boyfriend might simply not enjoy drinking or prefer other activities over drinking.
Past experiences: It's possible that your boyfriend had negative experiences related to drinking in the past, which could influence his current feelings about it.
Health concerns: He might have health concerns that prevent him from drinking or make him prefer to avoid alcohol.
Comfort level: Some people may feel uncomfortable or anxious in certain social situations, including drinking, and may prefer to avoid them.
Communication: It's important to have open communication with your partner. If he hasn't expressed why he doesn't like drinking with you, consider having an honest and non-judgmental conversation to understand his perspective better.
Personal boundaries: Respecting each other's boundaries and preferences is crucial in any relationship. If he's not comfortable with drinking, it's essential to acknowledge and respect that.
Alcohol-related problems: If he has concerns about alcohol consumption leading to potential issues in your relationship or life, he may be avoiding drinking altogether.
It's essential to remember that everyone is different, and not everyone enjoys the same activities. The best approach is to have an open and understanding conversation with your boyfriend to learn more about his reasons and feelings regarding drinking and to ensure that both of your preferences and needs are respected in the relationship.