The phrase "to be exclusive" means to limit access or participation, especially in a way that is intended to make something more desirable. It can refer to being the only one who has access to something or being part of a select group of people who have been given special privileges or opportunities. For example, a restaurant may offer an "exclusive" menu item that is not available anywhere else, or a fashion brand may create a limited-edition line that is "exclusive" to their store. The phrase can also be used in the context of relationships, where being exclusive means being in a committed and exclusive relationship with someone, meaning they are the only person you are romantically involved with.