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1 definition by G55

 
1.
Facebook Official. When a person or people decide to become public enough about their relationship to put it on their Facebook profile.
"Dave and Lisa must be getting pretty serious, they made their relationship F.B.O."

"Looks like Harrison and Ashley are definitely broken up. Both of them are single on Facebook. It's F.B.O."
by G55 June 09, 2007