Yes. Friend, partner, husband, wife, children, parents are all common subjects of questions. You can also ask about celebrities, politicians, whoever. Or your pets, and even plants. All that is required is that you have a genuine interest in who you are asking about. It does not matter whether they are close to you or not or whether you know them personally or not; yet it is rare that somebody will pay to ask about people they do not know personally. It is up to you.