by YumiSpewns May 28, 2010
(Face Book Best Friend). (n) a person that you do not know at all, but for some reason feel the need to respond to any number of your posts as a close friend.
Sally: No feeling 100% percent today.
FBBF: I am so sorry to hear that.
Sally: Thanks, to my newest FBBF.
FBBF: I am so sorry to hear that.
Sally: Thanks, to my newest FBBF.
by Istvan Sengir May 14, 2010
by Getmygwallados August 07, 2010
Your boyfriend on facebook. He could live very far away, be in a relationship, or both. You trade messages and emails but never see each other in person.
I'm single, but I'm in love with my fbbf.
by RealNaughtyRN January 17, 2010