1. Respect each other's feelings: Understand and respect your best friend's boyfriend's feelings, as he may have misunderstood you or need time to adapt to your presence. Maintain politeness and appropriate distance, and avoid getting involved in their personal affairs.
2. Strengthen communication with your best friend: Communicate openly with your best friend, understand why her boyfriend has such an attitude towards you, and ask her for her opinion on this. Using girlfriends as a bridge to try to alleviate misunderstandings or improve relationships.
3. Self reflection and improvement: Reflect on your own behavior and actions to see if there are any areas that need improvement. Strive to become a more positive, friendly, and easy-going person, which can not only improve your relationship with your best friend and boyfriend, but also make you more popular in social settings.