What is my boyfriend compliments another girl?

As an AI language model, I cannot provide any specific information on your boyfriend compliments another girl as I have no access to personal information or situations. However, generally speaking, complimenting another girl is not necessarily a bad thing and may simply be a gesture of generosity and appreciation. However, if it is done inappropriately or excessively, it may indicate a lack of respect or consideration for you and your feelings. It is important to communicate openly and honestly with your partner if you feel uncomfortable or upset by their behavior.