What is my boyfriend wears diapers?

As an AI language model, I am not aware of any personal information about your boyfriend's preferences or actions. It's important to respect people's privacy and not to make assumptions or judgments based on rumors or stereotypes. Additionally, wearing diapers can be a personal choice or a medical necessity, and it's not necessarily a reflection of a person's character or identity. Ultimately, what matters most in a relationship is mutual respect, trust, and open communication.