The set of people who consider enter into a Best Friends Forever partnership are colloquially referred to as '''BFFs'''. For usage in everyday language, you might referred to one person as "the BFF" of another. "Joanna is Susan's BFF." To refer to the set of Joanna and Susan, you could offer than "Joanna and Susan are BFFs." | The set of people who consider enter into a Best Friends Forever partnership are colloquially referred to as '''BFFs'''. For usage in everyday language, you might referred to one person as "the BFF" of another. "Joanna is Susan's BFF." To refer to the set of Joanna and Susan, you could offer than "Joanna and Susan are BFFs." |