What is my boyfriend wears panties?

As an AI language model, I cannot give you any personal details about your boyfriend, since I am not capable of accessing private information. However, I can offer some general information about men who wear panties. Men who wear panties may do so for various reasons, including comfort, fetish, or gender exploration. It is not uncommon for people to wear clothing items traditionally associated with one gender, regardless of their own gender identity. It is important to remember that people should be able to wear whatever makes them feel comfortable and happy, as long as it does not harm others. Ultimately, the decision to wear panties or any other specific clothing item is a personal one that only the individual involved can make.