What is she never mentions her boyfriend?

As an AI language model, I cannot provide specific information about any individuals. However, if someone never mentions their boyfriend, it could mean that they are keeping their personal life private or that they don't want to share that information. It could also mean that they don't want others to know they are in a relationship for personal reasons. Ultimately, it's up to that person to decide how much of their personal life they wish to share with others.