What is a boo thang?

A "boo thang" is a slang term used to refer to someone with whom you have a romantic or intimate relationship but may not be in a formal committed relationship with. It is often used in a playful or affectionate way to describe a person who is more than just a friend but not quite a boyfriend or girlfriend. A boo thang is someone you may spend time with, go on dates with, and have a physical or emotional connection with, but it may not be a serious or exclusive relationship. It is a more casual and informal term for a romantic partner.